./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx --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 b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:05:59,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:05:59,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:05:59,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:05:59,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:05:59,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:05:59,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:05:59,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:05:59,740 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:05:59,745 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:05:59,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:05:59,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:05:59,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:05:59,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:05:59,750 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:05:59,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:05:59,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:05:59,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:05:59,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:05:59,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:05:59,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:05:59,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:05:59,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:05:59,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:05:59,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:05:59,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:05:59,757 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:05:59,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:05:59,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:05:59,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:05:59,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:05:59,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:59,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:05:59,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:05:59,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:05:59,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:05:59,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:05:59,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:05:59,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:05:59,764 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:05:59,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:05:59,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:05:59,765 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_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 [2023-11-21 22:06:00,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:06:00,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:06:00,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:06:00,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:06:00,174 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:06:00,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2023-11-21 22:06:03,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:06:03,485 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:06:03,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2023-11-21 22:06:03,513 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/data/3d8b9f3ce/350fc8c9d5224b8a8b8aa2bcb35cbe93/FLAG2071c68eb [2023-11-21 22:06:03,531 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/data/3d8b9f3ce/350fc8c9d5224b8a8b8aa2bcb35cbe93 [2023-11-21 22:06:03,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:06:03,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:06:03,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:06:03,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:06:03,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:06:03,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:06:03" (1/1) ... [2023-11-21 22:06:03,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e361d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:03, skipping insertion in model container [2023-11-21 22:06:03,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:06:03" (1/1) ... [2023-11-21 22:06:03,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:06:03,855 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2023-11-21 22:06:03,919 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_ddb1f748-cb2d-4207-ae47-c794ffb67e54/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2023-11-21 22:06:04,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:06:04,050 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:06:04,063 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_ddb1f748-cb2d-4207-ae47-c794ffb67e54/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2023-11-21 22:06:04,087 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_ddb1f748-cb2d-4207-ae47-c794ffb67e54/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2023-11-21 22:06:04,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:06:04,161 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:06:04,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04 WrapperNode [2023-11-21 22:06:04,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:06:04,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:06:04,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:06:04,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:06:04,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,255 INFO L138 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 808 [2023-11-21 22:06:04,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:06:04,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:06:04,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:06:04,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:06:04,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,275 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,294 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:06:04,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:06:04,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:06:04,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:06:04,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:06:04,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (1/1) ... [2023-11-21 22:06:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:04,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:06:04,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:06:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:06:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-21 22:06:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-21 22:06:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-21 22:06:04,469 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-21 22:06:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-21 22:06:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-21 22:06:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-21 22:06:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-21 22:06:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-21 22:06:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-21 22:06:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-21 22:06:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-21 22:06:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-21 22:06:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-21 22:06:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-21 22:06:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-21 22:06:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-21 22:06:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-21 22:06:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-21 22:06:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-21 22:06:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-21 22:06:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-21 22:06:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:06:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-21 22:06:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-21 22:06:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-21 22:06:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-21 22:06:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:06:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:06:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-21 22:06:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-21 22:06:04,666 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:06:04,670 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:06:05,611 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-21 22:06:05,611 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-21 22:06:05,672 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:06:06,176 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:06:06,177 INFO L308 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-21 22:06:06,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:06:06 BoogieIcfgContainer [2023-11-21 22:06:06,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:06:06,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:06:06,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:06:06,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:06:06,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:06:03" (1/3) ... [2023-11-21 22:06:06,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc1ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:06:06, skipping insertion in model container [2023-11-21 22:06:06,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:04" (2/3) ... [2023-11-21 22:06:06,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc1ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:06:06, skipping insertion in model container [2023-11-21 22:06:06,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:06:06" (3/3) ... [2023-11-21 22:06:06,190 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-1.c [2023-11-21 22:06:06,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:06:06,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:06:06,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:06:06,273 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;@51a01fed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:06:06,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 22:06:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 166 states have (on average 1.5) internal successors, (249), 172 states have internal predecessors, (249), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 22:06:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 22:06:06,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:06,290 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] [2023-11-21 22:06:06,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:06,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2116893079, now seen corresponding path program 1 times [2023-11-21 22:06:06,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:06,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542749241] [2023-11-21 22:06:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:06,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:06:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:06:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:06:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542749241] [2023-11-21 22:06:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542749241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:06:06,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538878375] [2023-11-21 22:06:06,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:06,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:06:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:06:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:06:06,946 INFO L87 Difference]: Start difference. First operand has 220 states, 166 states have (on average 1.5) internal successors, (249), 172 states have internal predecessors, (249), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 22:06:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:08,086 INFO L93 Difference]: Finished difference Result 494 states and 721 transitions. [2023-11-21 22:06:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:06:08,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2023-11-21 22:06:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:08,101 INFO L225 Difference]: With dead ends: 494 [2023-11-21 22:06:08,101 INFO L226 Difference]: Without dead ends: 278 [2023-11-21 22:06:08,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:06:08,110 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 642 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:08,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 646 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:06:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-21 22:06:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2023-11-21 22:06:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 204 states have (on average 1.4264705882352942) internal successors, (291), 208 states have internal predecessors, (291), 47 states have call successors, (47), 21 states have call predecessors, (47), 20 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-21 22:06:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 383 transitions. [2023-11-21 22:06:08,187 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 383 transitions. Word has length 44 [2023-11-21 22:06:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:08,187 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 383 transitions. [2023-11-21 22:06:08,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 22:06:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 383 transitions. [2023-11-21 22:06:08,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:06:08,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:08,191 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] [2023-11-21 22:06:08,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:06:08,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:08,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1408356238, now seen corresponding path program 1 times [2023-11-21 22:06:08,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:08,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355343722] [2023-11-21 22:06:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:08,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:06:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 22:06:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:08,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:08,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355343722] [2023-11-21 22:06:08,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355343722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:08,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:08,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:06:08,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793727161] [2023-11-21 22:06:08,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:08,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:06:08,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:08,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:06:08,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:08,461 INFO L87 Difference]: Start difference. First operand 273 states and 383 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 22:06:10,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:10,100 INFO L93 Difference]: Finished difference Result 695 states and 967 transitions. [2023-11-21 22:06:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 22:06:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-11-21 22:06:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:10,116 INFO L225 Difference]: With dead ends: 695 [2023-11-21 22:06:10,116 INFO L226 Difference]: Without dead ends: 338 [2023-11-21 22:06:10,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:06:10,126 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 941 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:10,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1129 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 22:06:10,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-21 22:06:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 319. [2023-11-21 22:06:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 233 states have (on average 1.3648068669527897) internal successors, (318), 237 states have internal predecessors, (318), 57 states have call successors, (57), 28 states have call predecessors, (57), 27 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-21 22:06:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 433 transitions. [2023-11-21 22:06:10,180 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 433 transitions. Word has length 45 [2023-11-21 22:06:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:10,180 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 433 transitions. [2023-11-21 22:06:10,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 22:06:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 433 transitions. [2023-11-21 22:06:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 22:06:10,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:10,183 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] [2023-11-21 22:06:10,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:06:10,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:10,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash 632434662, now seen corresponding path program 1 times [2023-11-21 22:06:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:10,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38953605] [2023-11-21 22:06:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:10,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 22:06:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:06:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:10,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:10,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38953605] [2023-11-21 22:06:10,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38953605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:06:10,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735908858] [2023-11-21 22:06:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:10,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:06:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:06:10,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:10,457 INFO L87 Difference]: Start difference. First operand 319 states and 433 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 22:06:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:11,875 INFO L93 Difference]: Finished difference Result 785 states and 1056 transitions. [2023-11-21 22:06:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 22:06:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-11-21 22:06:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:11,881 INFO L225 Difference]: With dead ends: 785 [2023-11-21 22:06:11,881 INFO L226 Difference]: Without dead ends: 608 [2023-11-21 22:06:11,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:06:11,884 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1062 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:11,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 895 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:06:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-21 22:06:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 583. [2023-11-21 22:06:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 414 states have (on average 1.2922705314009661) internal successors, (535), 418 states have internal predecessors, (535), 106 states have call successors, (106), 62 states have call predecessors, (106), 61 states have return successors, (129), 104 states have call predecessors, (129), 104 states have call successors, (129) [2023-11-21 22:06:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 770 transitions. [2023-11-21 22:06:12,001 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 770 transitions. Word has length 46 [2023-11-21 22:06:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:12,002 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 770 transitions. [2023-11-21 22:06:12,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 22:06:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 770 transitions. [2023-11-21 22:06:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 22:06:12,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:12,010 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] [2023-11-21 22:06:12,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:06:12,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:12,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1070456012, now seen corresponding path program 1 times [2023-11-21 22:06:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716525606] [2023-11-21 22:06:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 22:06:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:06:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:12,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716525606] [2023-11-21 22:06:12,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716525606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:12,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:12,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:06:12,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827539006] [2023-11-21 22:06:12,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:12,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:06:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:12,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:06:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:06:12,174 INFO L87 Difference]: Start difference. First operand 583 states and 770 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:12,585 INFO L93 Difference]: Finished difference Result 584 states and 771 transitions. [2023-11-21 22:06:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:06:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-11-21 22:06:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:12,589 INFO L225 Difference]: With dead ends: 584 [2023-11-21 22:06:12,593 INFO L226 Difference]: Without dead ends: 140 [2023-11-21 22:06:12,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:12,604 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 462 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:12,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 402 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:06:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-21 22:06:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-21 22:06:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 112 states have (on average 1.4553571428571428) internal successors, (163), 113 states have internal predecessors, (163), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-21 22:06:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 205 transitions. [2023-11-21 22:06:12,624 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 205 transitions. Word has length 50 [2023-11-21 22:06:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:12,626 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 205 transitions. [2023-11-21 22:06:12,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 205 transitions. [2023-11-21 22:06:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 22:06:12,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:12,629 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] [2023-11-21 22:06:12,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:06:12,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:12,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2113618633, now seen corresponding path program 1 times [2023-11-21 22:06:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020958710] [2023-11-21 22:06:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:12,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:12,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:12,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020958710] [2023-11-21 22:06:12,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020958710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:12,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:12,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:06:12,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665350081] [2023-11-21 22:06:12,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:12,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:06:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:06:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:06:12,991 INFO L87 Difference]: Start difference. First operand 140 states and 205 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-21 22:06:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:15,020 INFO L93 Difference]: Finished difference Result 653 states and 1020 transitions. [2023-11-21 22:06:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 22:06:15,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 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 52 [2023-11-21 22:06:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:15,030 INFO L225 Difference]: With dead ends: 653 [2023-11-21 22:06:15,031 INFO L226 Difference]: Without dead ends: 519 [2023-11-21 22:06:15,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:06:15,040 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 790 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:15,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 745 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 22:06:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-21 22:06:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 511. [2023-11-21 22:06:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 416 states have (on average 1.4471153846153846) internal successors, (602), 420 states have internal predecessors, (602), 70 states have call successors, (70), 24 states have call predecessors, (70), 24 states have return successors, (102), 67 states have call predecessors, (102), 70 states have call successors, (102) [2023-11-21 22:06:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 774 transitions. [2023-11-21 22:06:15,150 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 774 transitions. Word has length 52 [2023-11-21 22:06:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:15,150 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 774 transitions. [2023-11-21 22:06:15,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-21 22:06:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 774 transitions. [2023-11-21 22:06:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 22:06:15,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:15,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:15,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:06:15,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:15,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1053423454, now seen corresponding path program 1 times [2023-11-21 22:06:15,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:15,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492994140] [2023-11-21 22:06:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:06:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:06:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492994140] [2023-11-21 22:06:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492994140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953204309] [2023-11-21 22:06:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:15,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:15,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:15,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:15,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:06:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:06:15,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-21 22:06:15,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:06:15,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953204309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:15,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:06:15,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-21 22:06:15,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232522552] [2023-11-21 22:06:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:15,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:06:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:06:15,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:15,822 INFO L87 Difference]: Start difference. First operand 511 states and 774 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:16,041 INFO L93 Difference]: Finished difference Result 1508 states and 2347 transitions. [2023-11-21 22:06:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:06:16,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2023-11-21 22:06:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:16,049 INFO L225 Difference]: With dead ends: 1508 [2023-11-21 22:06:16,049 INFO L226 Difference]: Without dead ends: 1003 [2023-11-21 22:06:16,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:16,054 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 177 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:16,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 327 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:16,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2023-11-21 22:06:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 997. [2023-11-21 22:06:16,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 816 states have (on average 1.4411764705882353) internal successors, (1176), 823 states have internal predecessors, (1176), 132 states have call successors, (132), 48 states have call predecessors, (132), 48 states have return successors, (193), 126 states have call predecessors, (193), 132 states have call successors, (193) [2023-11-21 22:06:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1501 transitions. [2023-11-21 22:06:16,179 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1501 transitions. Word has length 102 [2023-11-21 22:06:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:16,179 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1501 transitions. [2023-11-21 22:06:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1501 transitions. [2023-11-21 22:06:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 22:06:16,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:16,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:16,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:16,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:06:16,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:16,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1656706336, now seen corresponding path program 1 times [2023-11-21 22:06:16,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:16,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263939149] [2023-11-21 22:06:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:06:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:06:16,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:16,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263939149] [2023-11-21 22:06:16,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263939149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182468741] [2023-11-21 22:06:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:16,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:16,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:16,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:06:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:16,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:06:16,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-21 22:06:17,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:06:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182468741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:17,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:06:17,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-21 22:06:17,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236787222] [2023-11-21 22:06:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:06:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:06:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:17,035 INFO L87 Difference]: Start difference. First operand 997 states and 1501 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:17,358 INFO L93 Difference]: Finished difference Result 2954 states and 4565 transitions. [2023-11-21 22:06:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:06:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2023-11-21 22:06:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:17,400 INFO L225 Difference]: With dead ends: 2954 [2023-11-21 22:06:17,400 INFO L226 Difference]: Without dead ends: 1963 [2023-11-21 22:06:17,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:17,406 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 168 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:17,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 327 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:17,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-11-21 22:06:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1953. [2023-11-21 22:06:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1604 states have (on average 1.4339152119700749) internal successors, (2300), 1617 states have internal predecessors, (2300), 252 states have call successors, (252), 96 states have call predecessors, (252), 96 states have return successors, (368), 240 states have call predecessors, (368), 252 states have call successors, (368) [2023-11-21 22:06:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2920 transitions. [2023-11-21 22:06:17,610 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2920 transitions. Word has length 102 [2023-11-21 22:06:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:17,611 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 2920 transitions. [2023-11-21 22:06:17,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2920 transitions. [2023-11-21 22:06:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 22:06:17,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:17,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:17,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:17,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:17,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2017223394, now seen corresponding path program 1 times [2023-11-21 22:06:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284386200] [2023-11-21 22:06:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:06:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:06:18,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284386200] [2023-11-21 22:06:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284386200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604194234] [2023-11-21 22:06:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:18,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:18,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:18,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:06:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:18,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:06:18,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-21 22:06:18,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:06:18,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604194234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:18,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:06:18,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-21 22:06:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803586891] [2023-11-21 22:06:18,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:18,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:06:18,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:06:18,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:18,480 INFO L87 Difference]: Start difference. First operand 1953 states and 2920 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:18,998 INFO L93 Difference]: Finished difference Result 5798 states and 8889 transitions. [2023-11-21 22:06:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:06:18,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2023-11-21 22:06:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:19,027 INFO L225 Difference]: With dead ends: 5798 [2023-11-21 22:06:19,027 INFO L226 Difference]: Without dead ends: 3851 [2023-11-21 22:06:19,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:19,039 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 174 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:19,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 327 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2023-11-21 22:06:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3833. [2023-11-21 22:06:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3156 states have (on average 1.4258555133079849) internal successors, (4500), 3181 states have internal predecessors, (4500), 484 states have call successors, (484), 192 states have call predecessors, (484), 192 states have return successors, (704), 460 states have call predecessors, (704), 484 states have call successors, (704) [2023-11-21 22:06:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5688 transitions. [2023-11-21 22:06:19,589 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5688 transitions. Word has length 102 [2023-11-21 22:06:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:19,592 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 5688 transitions. [2023-11-21 22:06:19,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:06:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5688 transitions. [2023-11-21 22:06:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 22:06:19,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:19,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:19,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-21 22:06:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb1f748-cb2d-4207-ae47-c794ffb67e54/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:19,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:19,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2089511132, now seen corresponding path program 1 times [2023-11-21 22:06:19,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:19,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482019581] [2023-11-21 22:06:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:19,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:19,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:06:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-21 22:06:20,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482019581] [2023-11-21 22:06:20,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482019581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:20,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:20,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:20,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055900714] [2023-11-21 22:06:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:20,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:20,105 INFO L87 Difference]: Start difference. First operand 3833 states and 5688 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:06:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:21,526 INFO L93 Difference]: Finished difference Result 7291 states and 11037 transitions. [2023-11-21 22:06:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:06:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 102 [2023-11-21 22:06:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:21,568 INFO L225 Difference]: With dead ends: 7291 [2023-11-21 22:06:21,568 INFO L226 Difference]: Without dead ends: 4401 [2023-11-21 22:06:21,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:21,583 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 155 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:21,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 556 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:06:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2023-11-21 22:06:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 4221. [2023-11-21 22:06:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4221 states, 3528 states have (on average 1.443310657596372) internal successors, (5092), 3553 states have internal predecessors, (5092), 492 states have call successors, (492), 200 states have call predecessors, (492), 200 states have return successors, (712), 468 states have call predecessors, (712), 492 states have call successors, (712) [2023-11-21 22:06:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 6296 transitions. [2023-11-21 22:06:22,251 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 6296 transitions. Word has length 102 [2023-11-21 22:06:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:22,251 INFO L495 AbstractCegarLoop]: Abstraction has 4221 states and 6296 transitions. [2023-11-21 22:06:22,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:06:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 6296 transitions. [2023-11-21 22:06:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-21 22:06:22,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:22,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:22,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:06:22,273 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:22,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash -643529760, now seen corresponding path program 1 times [2023-11-21 22:06:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:22,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633003938] [2023-11-21 22:06:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-21 22:06:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-21 22:06:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 22:06:22,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:22,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633003938] [2023-11-21 22:06:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633003938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:22,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:22,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480652978] [2023-11-21 22:06:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:22,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:22,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:22,672 INFO L87 Difference]: Start difference. First operand 4221 states and 6296 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:24,508 INFO L93 Difference]: Finished difference Result 12514 states and 19057 transitions. [2023-11-21 22:06:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:06:24,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2023-11-21 22:06:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:24,574 INFO L225 Difference]: With dead ends: 12514 [2023-11-21 22:06:24,574 INFO L226 Difference]: Without dead ends: 8299 [2023-11-21 22:06:24,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:24,593 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 273 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:24,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 365 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:06:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8299 states. [2023-11-21 22:06:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8299 to 8257. [2023-11-21 22:06:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 6908 states have (on average 1.4319629415170816) internal successors, (9892), 6957 states have internal predecessors, (9892), 948 states have call successors, (948), 400 states have call predecessors, (948), 400 states have return successors, (1364), 900 states have call predecessors, (1364), 948 states have call successors, (1364) [2023-11-21 22:06:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 12204 transitions. [2023-11-21 22:06:25,817 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 12204 transitions. Word has length 138 [2023-11-21 22:06:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:25,819 INFO L495 AbstractCegarLoop]: Abstraction has 8257 states and 12204 transitions. [2023-11-21 22:06:25,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 12204 transitions. [2023-11-21 22:06:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-21 22:06:25,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:25,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:25,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:06:25,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:25,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash -126866729, now seen corresponding path program 1 times [2023-11-21 22:06:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:25,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851965745] [2023-11-21 22:06:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:25,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:06:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-21 22:06:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 22:06:26,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:26,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851965745] [2023-11-21 22:06:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851965745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:26,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:26,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:26,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192605021] [2023-11-21 22:06:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:26,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:26,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:26,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:26,211 INFO L87 Difference]: Start difference. First operand 8257 states and 12204 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:28,730 INFO L93 Difference]: Finished difference Result 24486 states and 36913 transitions. [2023-11-21 22:06:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:06:28,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2023-11-21 22:06:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:28,817 INFO L225 Difference]: With dead ends: 24486 [2023-11-21 22:06:28,818 INFO L226 Difference]: Without dead ends: 16235 [2023-11-21 22:06:28,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:28,852 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 275 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:28,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 365 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:06:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16235 states. [2023-11-21 22:06:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16235 to 16153. [2023-11-21 22:06:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16153 states, 13524 states have (on average 1.4199940845903578) internal successors, (19204), 13621 states have internal predecessors, (19204), 1828 states have call successors, (1828), 800 states have call predecessors, (1828), 800 states have return successors, (2612), 1732 states have call predecessors, (2612), 1828 states have call successors, (2612) [2023-11-21 22:06:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16153 states to 16153 states and 23644 transitions. [2023-11-21 22:06:31,167 INFO L78 Accepts]: Start accepts. Automaton has 16153 states and 23644 transitions. Word has length 138 [2023-11-21 22:06:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:31,168 INFO L495 AbstractCegarLoop]: Abstraction has 16153 states and 23644 transitions. [2023-11-21 22:06:31,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 16153 states and 23644 transitions. [2023-11-21 22:06:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-21 22:06:31,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:31,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:06:31,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:31,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:31,253 INFO L85 PathProgramCache]: Analyzing trace with hash 63843024, now seen corresponding path program 1 times [2023-11-21 22:06:31,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492086919] [2023-11-21 22:06:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:31,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-21 22:06:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-21 22:06:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 22:06:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492086919] [2023-11-21 22:06:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492086919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:31,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:31,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945319468] [2023-11-21 22:06:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:31,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:31,625 INFO L87 Difference]: Start difference. First operand 16153 states and 23644 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:35,891 INFO L93 Difference]: Finished difference Result 47902 states and 71441 transitions. [2023-11-21 22:06:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:06:35,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2023-11-21 22:06:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:36,075 INFO L225 Difference]: With dead ends: 47902 [2023-11-21 22:06:36,076 INFO L226 Difference]: Without dead ends: 31755 [2023-11-21 22:06:36,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:36,150 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 278 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:36,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 369 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:06:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31755 states. [2023-11-21 22:06:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31755 to 31593. [2023-11-21 22:06:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31593 states, 26468 states have (on average 1.4074353936829378) internal successors, (37252), 26661 states have internal predecessors, (37252), 3524 states have call successors, (3524), 1600 states have call predecessors, (3524), 1600 states have return successors, (4996), 3332 states have call predecessors, (4996), 3524 states have call successors, (4996) [2023-11-21 22:06:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31593 states to 31593 states and 45772 transitions. [2023-11-21 22:06:39,863 INFO L78 Accepts]: Start accepts. Automaton has 31593 states and 45772 transitions. Word has length 138 [2023-11-21 22:06:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:39,863 INFO L495 AbstractCegarLoop]: Abstraction has 31593 states and 45772 transitions. [2023-11-21 22:06:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 31593 states and 45772 transitions. [2023-11-21 22:06:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-21 22:06:39,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:39,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:39,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:06:39,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:39,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:39,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2072811998, now seen corresponding path program 1 times [2023-11-21 22:06:39,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:39,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865382298] [2023-11-21 22:06:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:39,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:06:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:06:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:06:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-21 22:06:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 22:06:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-21 22:06:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 22:06:40,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865382298] [2023-11-21 22:06:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865382298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:40,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:40,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241275639] [2023-11-21 22:06:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:40,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:40,256 INFO L87 Difference]: Start difference. First operand 31593 states and 45772 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:06:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:45,871 INFO L93 Difference]: Finished difference Result 73293 states and 107918 transitions. [2023-11-21 22:06:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:06:45,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2023-11-21 22:06:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:46,291 INFO L225 Difference]: With dead ends: 73293 [2023-11-21 22:06:46,291 INFO L226 Difference]: Without dead ends: 48651 [2023-11-21 22:06:46,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:46,393 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 272 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:46,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 393 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:06:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48651 states.