./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl --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 a41d14195dc7825ea8ff849a910a7045aa33d6087daf5af287d6c34e44b1032a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:55,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:55,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:18:55,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:55,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:55,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:55,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:55,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:55,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:55,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:55,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:55,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:55,506 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:55,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:55,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:55,507 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:55,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:55,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:55,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:55,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:55,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:55,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:55,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:55,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:55,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:55,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:55,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:55,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:55,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:55,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:55,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:55,522 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:55,522 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:55,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:55,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:55,524 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:55,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:55,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:55,525 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:55,525 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_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a41d14195dc7825ea8ff849a910a7045aa33d6087daf5af287d6c34e44b1032a [2023-11-12 02:18:55,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:55,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:55,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:55,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:55,877 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:55,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2023-11-12 02:18:59,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:59,343 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:59,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2023-11-12 02:18:59,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/data/0dcb25dd9/4ec5580b4112465192821b34db4f74b0/FLAGa6bd3ec5c [2023-11-12 02:18:59,390 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/data/0dcb25dd9/4ec5580b4112465192821b34db4f74b0 [2023-11-12 02:18:59,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:59,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:59,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:59,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:59,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:59,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:59" (1/1) ... [2023-11-12 02:18:59,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd49e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:59, skipping insertion in model container [2023-11-12 02:18:59,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:59" (1/1) ... [2023-11-12 02:18:59,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:59,736 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_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[914,927] [2023-11-12 02:18:59,807 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_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[7115,7128] [2023-11-12 02:18:59,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:59,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:59,973 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_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[914,927] [2023-11-12 02:18:59,993 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_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[7115,7128] [2023-11-12 02:19:00,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:00,143 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:00,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00 WrapperNode [2023-11-12 02:19:00,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:00,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:00,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:00,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:00,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,264 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1076 [2023-11-12 02:19:00,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:00,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:00,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:00,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:00,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:00,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:00,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:00,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:00,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (1/1) ... [2023-11-12 02:19:00,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:00,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:00,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:19:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:19:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-12 02:19:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-12 02:19:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-12 02:19:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-12 02:19:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-12 02:19:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-12 02:19:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-12 02:19:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-12 02:19:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-12 02:19:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-12 02:19:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-12 02:19:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-12 02:19:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-12 02:19:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-12 02:19:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-12 02:19:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-12 02:19:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-12 02:19:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-12 02:19:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-12 02:19:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-12 02:19:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:19:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-12 02:19:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-12 02:19:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-12 02:19:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-12 02:19:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-12 02:19:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-12 02:19:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-12 02:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-12 02:19:00,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:00,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:01,933 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:01,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:01,945 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-12 02:19:01,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:01 BoogieIcfgContainer [2023-11-12 02:19:01,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:01,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:01,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:01,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:01,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:59" (1/3) ... [2023-11-12 02:19:01,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b9de4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:01, skipping insertion in model container [2023-11-12 02:19:01,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:00" (2/3) ... [2023-11-12 02:19:01,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b9de4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:01, skipping insertion in model container [2023-11-12 02:19:01,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:01" (3/3) ... [2023-11-12 02:19:01,960 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2023-11-12 02:19:01,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:01,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:19:02,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:19:02,058 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;@694fa602, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:19:02,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:19:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 504 states, 444 states have (on average 1.6261261261261262) internal successors, (722), 452 states have internal predecessors, (722), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-12 02:19:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:02,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:02,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:02,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:02,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1058964764, now seen corresponding path program 1 times [2023-11-12 02:19:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197787416] [2023-11-12 02:19:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:02,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197787416] [2023-11-12 02:19:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197787416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:02,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:19:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400108479] [2023-11-12 02:19:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:02,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:19:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:19:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:02,776 INFO L87 Difference]: Start difference. First operand has 504 states, 444 states have (on average 1.6261261261261262) internal successors, (722), 452 states have internal predecessors, (722), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:04,719 INFO L93 Difference]: Finished difference Result 1114 states and 1770 transitions. [2023-11-12 02:19:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:19:04,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-12 02:19:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:04,741 INFO L225 Difference]: With dead ends: 1114 [2023-11-12 02:19:04,742 INFO L226 Difference]: Without dead ends: 628 [2023-11-12 02:19:04,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:19:04,753 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 865 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:04,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 2258 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:19:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-12 02:19:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 589. [2023-11-12 02:19:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 512 states have (on average 1.517578125) internal successors, (777), 519 states have internal predecessors, (777), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-12 02:19:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 884 transitions. [2023-11-12 02:19:04,871 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 884 transitions. Word has length 65 [2023-11-12 02:19:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:04,872 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 884 transitions. [2023-11-12 02:19:04,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 884 transitions. [2023-11-12 02:19:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:04,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:04,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:04,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:19:04,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:04,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash 619923876, now seen corresponding path program 1 times [2023-11-12 02:19:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:04,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427079218] [2023-11-12 02:19:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:04,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:05,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:05,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427079218] [2023-11-12 02:19:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427079218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:05,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:19:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341514493] [2023-11-12 02:19:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:05,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:19:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:19:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:05,168 INFO L87 Difference]: Start difference. First operand 589 states and 884 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:06,971 INFO L93 Difference]: Finished difference Result 936 states and 1361 transitions. [2023-11-12 02:19:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:19:06,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-12 02:19:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:06,979 INFO L225 Difference]: With dead ends: 936 [2023-11-12 02:19:06,980 INFO L226 Difference]: Without dead ends: 759 [2023-11-12 02:19:06,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:19:06,983 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1465 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:06,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 2483 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:19:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-11-12 02:19:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 685. [2023-11-12 02:19:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 588 states have (on average 1.498299319727891) internal successors, (881), 597 states have internal predecessors, (881), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2023-11-12 02:19:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1018 transitions. [2023-11-12 02:19:07,057 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1018 transitions. Word has length 65 [2023-11-12 02:19:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:07,058 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1018 transitions. [2023-11-12 02:19:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1018 transitions. [2023-11-12 02:19:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:07,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:07,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:07,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:19:07,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:07,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1408662234, now seen corresponding path program 1 times [2023-11-12 02:19:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568402454] [2023-11-12 02:19:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:07,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:07,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:07,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568402454] [2023-11-12 02:19:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568402454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:07,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:19:07,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316086295] [2023-11-12 02:19:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:07,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:19:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:19:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:19:07,340 INFO L87 Difference]: Start difference. First operand 685 states and 1018 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:09,111 INFO L93 Difference]: Finished difference Result 986 states and 1432 transitions. [2023-11-12 02:19:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:19:09,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-12 02:19:09,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:09,144 INFO L225 Difference]: With dead ends: 986 [2023-11-12 02:19:09,144 INFO L226 Difference]: Without dead ends: 719 [2023-11-12 02:19:09,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:19:09,158 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 658 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:09,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 3032 Invalid, 2095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:19:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-12 02:19:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 690. [2023-11-12 02:19:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 592 states have (on average 1.491554054054054) internal successors, (883), 601 states have internal predecessors, (883), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2023-11-12 02:19:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1021 transitions. [2023-11-12 02:19:09,244 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1021 transitions. Word has length 65 [2023-11-12 02:19:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:09,245 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1021 transitions. [2023-11-12 02:19:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1021 transitions. [2023-11-12 02:19:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:09,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:09,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:09,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:19:09,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:09,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1856945764, now seen corresponding path program 1 times [2023-11-12 02:19:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:09,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784729355] [2023-11-12 02:19:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:09,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784729355] [2023-11-12 02:19:09,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784729355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:09,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:09,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:19:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535586403] [2023-11-12 02:19:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:19:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:19:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:19:09,510 INFO L87 Difference]: Start difference. First operand 690 states and 1021 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-12 02:19:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:12,307 INFO L93 Difference]: Finished difference Result 2012 states and 2817 transitions. [2023-11-12 02:19:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-12 02:19:12,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2023-11-12 02:19:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:12,327 INFO L225 Difference]: With dead ends: 2012 [2023-11-12 02:19:12,328 INFO L226 Difference]: Without dead ends: 1722 [2023-11-12 02:19:12,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-12 02:19:12,342 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 3729 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3743 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:12,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3743 Valid, 2727 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-12 02:19:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-12 02:19:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1591. [2023-11-12 02:19:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1307 states have (on average 1.3940321346595257) internal successors, (1822), 1331 states have internal predecessors, (1822), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2023-11-12 02:19:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2162 transitions. [2023-11-12 02:19:12,485 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2162 transitions. Word has length 65 [2023-11-12 02:19:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:12,486 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2162 transitions. [2023-11-12 02:19:12,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-12 02:19:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2162 transitions. [2023-11-12 02:19:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:12,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:12,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:12,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:19:12,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:12,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1450155194, now seen corresponding path program 1 times [2023-11-12 02:19:12,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:12,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847052379] [2023-11-12 02:19:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847052379] [2023-11-12 02:19:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847052379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:12,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:19:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000010272] [2023-11-12 02:19:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:19:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:19:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:19:12,705 INFO L87 Difference]: Start difference. First operand 1591 states and 2162 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:14,435 INFO L93 Difference]: Finished difference Result 2882 states and 3835 transitions. [2023-11-12 02:19:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:19:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-12 02:19:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:14,450 INFO L225 Difference]: With dead ends: 2882 [2023-11-12 02:19:14,450 INFO L226 Difference]: Without dead ends: 1697 [2023-11-12 02:19:14,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:19:14,458 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 982 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:14,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 2681 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:19:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-11-12 02:19:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1621. [2023-11-12 02:19:14,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1331 states have (on average 1.3809166040571) internal successors, (1838), 1355 states have internal predecessors, (1838), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2023-11-12 02:19:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2184 transitions. [2023-11-12 02:19:14,616 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2184 transitions. Word has length 65 [2023-11-12 02:19:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:14,617 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2184 transitions. [2023-11-12 02:19:14,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2184 transitions. [2023-11-12 02:19:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:14,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:14,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:14,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:19:14,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:14,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1458608708, now seen corresponding path program 1 times [2023-11-12 02:19:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:14,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716300711] [2023-11-12 02:19:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:14,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:14,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:14,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716300711] [2023-11-12 02:19:14,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716300711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:14,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:19:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081467784] [2023-11-12 02:19:14,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:14,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:19:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:19:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:14,883 INFO L87 Difference]: Start difference. First operand 1621 states and 2184 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:16,575 INFO L93 Difference]: Finished difference Result 2876 states and 3731 transitions. [2023-11-12 02:19:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:19:16,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-12 02:19:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:16,590 INFO L225 Difference]: With dead ends: 2876 [2023-11-12 02:19:16,590 INFO L226 Difference]: Without dead ends: 1884 [2023-11-12 02:19:16,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:19:16,594 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1811 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:16,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 1871 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:19:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2023-11-12 02:19:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1563. [2023-11-12 02:19:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1289 states have (on average 1.378588052754073) internal successors, (1777), 1308 states have internal predecessors, (1777), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2023-11-12 02:19:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2102 transitions. [2023-11-12 02:19:16,710 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2102 transitions. Word has length 65 [2023-11-12 02:19:16,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:16,710 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2102 transitions. [2023-11-12 02:19:16,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2102 transitions. [2023-11-12 02:19:16,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:19:16,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:16,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:19:16,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:16,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1592622214, now seen corresponding path program 1 times [2023-11-12 02:19:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:16,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151131620] [2023-11-12 02:19:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:16,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151131620] [2023-11-12 02:19:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151131620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:16,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:16,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:19:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194132756] [2023-11-12 02:19:16,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:16,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:19:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:19:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:19:16,861 INFO L87 Difference]: Start difference. First operand 1563 states and 2102 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:18,004 INFO L93 Difference]: Finished difference Result 3902 states and 5063 transitions. [2023-11-12 02:19:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:19:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-12 02:19:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:18,021 INFO L225 Difference]: With dead ends: 3902 [2023-11-12 02:19:18,021 INFO L226 Difference]: Without dead ends: 2746 [2023-11-12 02:19:18,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:19:18,026 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1795 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:18,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 1502 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:19:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-11-12 02:19:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2626. [2023-11-12 02:19:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2109 states have (on average 1.3129445234708392) internal successors, (2769), 2145 states have internal predecessors, (2769), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2023-11-12 02:19:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3404 transitions. [2023-11-12 02:19:18,227 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 3404 transitions. Word has length 65 [2023-11-12 02:19:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:18,228 INFO L495 AbstractCegarLoop]: Abstraction has 2626 states and 3404 transitions. [2023-11-12 02:19:18,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:19:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 3404 transitions. [2023-11-12 02:19:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 02:19:18,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:18,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:19:18,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:18,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1444156516, now seen corresponding path program 1 times [2023-11-12 02:19:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:18,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688414351] [2023-11-12 02:19:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688414351] [2023-11-12 02:19:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688414351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:19:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393419665] [2023-11-12 02:19:18,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:18,330 INFO L87 Difference]: Start difference. First operand 2626 states and 3404 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:19,600 INFO L93 Difference]: Finished difference Result 5942 states and 7549 transitions. [2023-11-12 02:19:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:19:19,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-12 02:19:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:19,623 INFO L225 Difference]: With dead ends: 5942 [2023-11-12 02:19:19,623 INFO L226 Difference]: Without dead ends: 3728 [2023-11-12 02:19:19,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:19:19,630 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1196 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:19,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 1485 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:19:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2023-11-12 02:19:19,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3460. [2023-11-12 02:19:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 2757 states have (on average 1.2927094668117518) internal successors, (3564), 2798 states have internal predecessors, (3564), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2023-11-12 02:19:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4405 transitions. [2023-11-12 02:19:19,966 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4405 transitions. Word has length 66 [2023-11-12 02:19:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:19,966 INFO L495 AbstractCegarLoop]: Abstraction has 3460 states and 4405 transitions. [2023-11-12 02:19:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4405 transitions. [2023-11-12 02:19:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-12 02:19:19,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:19,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:19,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:19:19,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:19,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1822151323, now seen corresponding path program 1 times [2023-11-12 02:19:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:19,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121256038] [2023-11-12 02:19:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:20,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:20,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121256038] [2023-11-12 02:19:20,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121256038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:20,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:20,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:19:20,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787960872] [2023-11-12 02:19:20,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:20,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:20,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:20,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:20,112 INFO L87 Difference]: Start difference. First operand 3460 states and 4405 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:21,386 INFO L93 Difference]: Finished difference Result 7332 states and 9179 transitions. [2023-11-12 02:19:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:19:21,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-12 02:19:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:21,425 INFO L225 Difference]: With dead ends: 7332 [2023-11-12 02:19:21,425 INFO L226 Difference]: Without dead ends: 4282 [2023-11-12 02:19:21,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:19:21,435 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1403 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:21,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1559 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:19:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2023-11-12 02:19:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 4014. [2023-11-12 02:19:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 3197 states have (on average 1.2837034720050047) internal successors, (4104), 3242 states have internal predecessors, (4104), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2023-11-12 02:19:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5074 transitions. [2023-11-12 02:19:21,783 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5074 transitions. Word has length 72 [2023-11-12 02:19:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:21,783 INFO L495 AbstractCegarLoop]: Abstraction has 4014 states and 5074 transitions. [2023-11-12 02:19:21,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:19:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5074 transitions. [2023-11-12 02:19:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:19:21,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:21,786 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:21,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:19:21,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:21,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash 135146136, now seen corresponding path program 1 times [2023-11-12 02:19:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:21,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316581090] [2023-11-12 02:19:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:21,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:21,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316581090] [2023-11-12 02:19:21,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316581090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:21,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:21,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:19:21,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069604759] [2023-11-12 02:19:21,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:19:21,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:19:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:19:21,891 INFO L87 Difference]: Start difference. First operand 4014 states and 5074 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:19:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:23,390 INFO L93 Difference]: Finished difference Result 5100 states and 6369 transitions. [2023-11-12 02:19:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:19:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2023-11-12 02:19:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:23,426 INFO L225 Difference]: With dead ends: 5100 [2023-11-12 02:19:23,427 INFO L226 Difference]: Without dead ends: 5097 [2023-11-12 02:19:23,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:19:23,430 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 2468 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:23,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 1177 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:19:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2023-11-12 02:19:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4476. [2023-11-12 02:19:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 3552 states have (on average 1.2725225225225225) internal successors, (4520), 3600 states have internal predecessors, (4520), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2023-11-12 02:19:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 5617 transitions. [2023-11-12 02:19:23,940 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 5617 transitions. Word has length 73 [2023-11-12 02:19:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:23,940 INFO L495 AbstractCegarLoop]: Abstraction has 4476 states and 5617 transitions. [2023-11-12 02:19:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:19:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 5617 transitions. [2023-11-12 02:19:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 02:19:23,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:23,943 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:23,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:19:23,944 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:23,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash -106911099, now seen corresponding path program 1 times [2023-11-12 02:19:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582204744] [2023-11-12 02:19:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:24,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:24,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582204744] [2023-11-12 02:19:24,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582204744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:19:24,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200181951] [2023-11-12 02:19:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:24,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:24,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:19:24,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:19:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:24,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:19:24,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:19:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:24,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:19:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200181951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:19:24,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:19:24,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-11-12 02:19:24,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196866578] [2023-11-12 02:19:24,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:19:24,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:19:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:19:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:19:24,913 INFO L87 Difference]: Start difference. First operand 4476 states and 5617 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 02:19:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:27,900 INFO L93 Difference]: Finished difference Result 8794 states and 10826 transitions. [2023-11-12 02:19:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-12 02:19:27,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2023-11-12 02:19:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:27,953 INFO L225 Difference]: With dead ends: 8794 [2023-11-12 02:19:27,954 INFO L226 Difference]: Without dead ends: 8791 [2023-11-12 02:19:27,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2023-11-12 02:19:27,958 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2880 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2944 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:27,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2944 Valid, 2553 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:19:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8791 states. [2023-11-12 02:19:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8791 to 7893. [2023-11-12 02:19:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7893 states, 6227 states have (on average 1.2530913762646538) internal successors, (7803), 6310 states have internal predecessors, (7803), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2023-11-12 02:19:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7893 states to 7893 states and 9760 transitions. [2023-11-12 02:19:28,842 INFO L78 Accepts]: Start accepts. Automaton has 7893 states and 9760 transitions. Word has length 74 [2023-11-12 02:19:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 7893 states and 9760 transitions. [2023-11-12 02:19:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 02:19:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7893 states and 9760 transitions. [2023-11-12 02:19:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:28,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:28,844 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:28,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:19:29,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:29,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:29,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash 215185496, now seen corresponding path program 2 times [2023-11-12 02:19:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081232764] [2023-11-12 02:19:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:29,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:29,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081232764] [2023-11-12 02:19:29,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081232764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:29,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:29,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:19:29,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992508040] [2023-11-12 02:19:29,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:29,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:29,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:29,157 INFO L87 Difference]: Start difference. First operand 7893 states and 9760 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:19:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:30,484 INFO L93 Difference]: Finished difference Result 10487 states and 12969 transitions. [2023-11-12 02:19:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:19:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2023-11-12 02:19:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:30,504 INFO L225 Difference]: With dead ends: 10487 [2023-11-12 02:19:30,504 INFO L226 Difference]: Without dead ends: 4313 [2023-11-12 02:19:30,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:19:30,516 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1346 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:30,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1607 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:19:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2023-11-12 02:19:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 3305. [2023-11-12 02:19:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 2645 states have (on average 1.2680529300567107) internal successors, (3354), 2674 states have internal predecessors, (3354), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2023-11-12 02:19:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4129 transitions. [2023-11-12 02:19:30,820 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4129 transitions. Word has length 77 [2023-11-12 02:19:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:30,821 INFO L495 AbstractCegarLoop]: Abstraction has 3305 states and 4129 transitions. [2023-11-12 02:19:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:19:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4129 transitions. [2023-11-12 02:19:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-12 02:19:30,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:30,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:19:30,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:30,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash 29741527, now seen corresponding path program 1 times [2023-11-12 02:19:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305940773] [2023-11-12 02:19:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-12 02:19:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:19:30,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:30,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305940773] [2023-11-12 02:19:30,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305940773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:30,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:30,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:19:30,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699491275] [2023-11-12 02:19:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:30,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:19:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:19:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:30,976 INFO L87 Difference]: Start difference. First operand 3305 states and 4129 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:19:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:33,103 INFO L93 Difference]: Finished difference Result 9089 states and 11126 transitions. [2023-11-12 02:19:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-12 02:19:33,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2023-11-12 02:19:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:33,132 INFO L225 Difference]: With dead ends: 9089 [2023-11-12 02:19:33,132 INFO L226 Difference]: Without dead ends: 5391 [2023-11-12 02:19:33,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-12 02:19:33,142 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1519 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:33,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1951 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:19:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2023-11-12 02:19:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5131. [2023-11-12 02:19:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 4036 states have (on average 1.2299306243805748) internal successors, (4964), 4102 states have internal predecessors, (4964), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2023-11-12 02:19:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 6289 transitions. [2023-11-12 02:19:33,720 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 6289 transitions. Word has length 84 [2023-11-12 02:19:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:33,720 INFO L495 AbstractCegarLoop]: Abstraction has 5131 states and 6289 transitions. [2023-11-12 02:19:33,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:19:33,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 6289 transitions. [2023-11-12 02:19:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:19:33,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:33,724 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:33,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:19:33,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:33,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash 387934998, now seen corresponding path program 1 times [2023-11-12 02:19:33,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033646652] [2023-11-12 02:19:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:33,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:19:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:19:33,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033646652] [2023-11-12 02:19:33,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033646652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:33,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:33,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:19:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479424398] [2023-11-12 02:19:33,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:33,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:19:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:19:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:19:33,906 INFO L87 Difference]: Start difference. First operand 5131 states and 6289 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:19:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:35,859 INFO L93 Difference]: Finished difference Result 8491 states and 10307 transitions. [2023-11-12 02:19:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 02:19:35,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2023-11-12 02:19:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:35,874 INFO L225 Difference]: With dead ends: 8491 [2023-11-12 02:19:35,874 INFO L226 Difference]: Without dead ends: 4292 [2023-11-12 02:19:35,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:19:35,886 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2408 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:35,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 1954 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:19:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2023-11-12 02:19:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 3871. [2023-11-12 02:19:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 3042 states have (on average 1.2222222222222223) internal successors, (3718), 3096 states have internal predecessors, (3718), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2023-11-12 02:19:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 4677 transitions. [2023-11-12 02:19:36,317 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 4677 transitions. Word has length 93 [2023-11-12 02:19:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:36,317 INFO L495 AbstractCegarLoop]: Abstraction has 3871 states and 4677 transitions. [2023-11-12 02:19:36,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:19:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 4677 transitions. [2023-11-12 02:19:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 02:19:36,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:36,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:36,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:19:36,323 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:36,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1739276165, now seen corresponding path program 1 times [2023-11-12 02:19:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521481537] [2023-11-12 02:19:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:36,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-12 02:19:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:19:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:19:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:19:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-12 02:19:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-12 02:19:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:19:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-12 02:19:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:36,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521481537] [2023-11-12 02:19:36,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521481537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:19:36,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132493105] [2023-11-12 02:19:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:36,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:36,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:19:36,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:19:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:19:36,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:19:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:19:36,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:19:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132493105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:36,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:19:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-11-12 02:19:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520438222] [2023-11-12 02:19:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:19:36,854 INFO L87 Difference]: Start difference. First operand 3871 states and 4677 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:19:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:37,090 INFO L93 Difference]: Finished difference Result 5746 states and 6916 transitions. [2023-11-12 02:19:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:19:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-12 02:19:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:37,098 INFO L225 Difference]: With dead ends: 5746 [2023-11-12 02:19:37,098 INFO L226 Difference]: Without dead ends: 2287 [2023-11-12 02:19:37,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:19:37,108 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 34 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:37,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3705 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2023-11-12 02:19:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2165. [2023-11-12 02:19:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 1782 states have (on average 1.250280583613917) internal successors, (2228), 1799 states have internal predecessors, (2228), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2023-11-12 02:19:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 2683 transitions. [2023-11-12 02:19:37,330 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 2683 transitions. Word has length 145 [2023-11-12 02:19:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:37,330 INFO L495 AbstractCegarLoop]: Abstraction has 2165 states and 2683 transitions. [2023-11-12 02:19:37,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 02:19:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 2683 transitions. [2023-11-12 02:19:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 02:19:37,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:37,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:37,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:19:37,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079cb5d3-1a1f-4a65-a160-7fb2407d07fe/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:19:37,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:37,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:37,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1336255801, now seen corresponding path program 1 times [2023-11-12 02:19:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373894512] [2023-11-12 02:19:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-12 02:19:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-12 02:19:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:19:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:19:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-12 02:19:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-12 02:19:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-12 02:19:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-12 02:19:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:37,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373894512] [2023-11-12 02:19:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373894512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:37,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:37,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:19:37,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706409476] [2023-11-12 02:19:37,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:37,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:37,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:37,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:37,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:37,672 INFO L87 Difference]: Start difference. First operand 2165 states and 2683 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-12 02:19:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:38,710 INFO L93 Difference]: Finished difference Result 2213 states and 2733 transitions. [2023-11-12 02:19:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:19:38,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2023-11-12 02:19:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:38,716 INFO L225 Difference]: With dead ends: 2213 [2023-11-12 02:19:38,716 INFO L226 Difference]: Without dead ends: 1839 [2023-11-12 02:19:38,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:19:38,719 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 757 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:38,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1774 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:19:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2023-11-12 02:19:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1794. [2023-11-12 02:19:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1495 states have (on average 1.2722408026755854) internal successors, (1902), 1509 states have internal predecessors, (1902), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2023-11-12 02:19:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2261 transitions. [2023-11-12 02:19:38,871 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2261 transitions. Word has length 147 [2023-11-12 02:19:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:38,872 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2261 transitions. [2023-11-12 02:19:38,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-12 02:19:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2261 transitions. [2023-11-12 02:19:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-12 02:19:38,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:38,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:38,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:19:38,877 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:38,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:38,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1053244256, now seen corresponding path program 1 times [2023-11-12 02:19:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660538467] [2023-11-12 02:19:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:19:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:19:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:19:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:19:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:19:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:19:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-12 02:19:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-12 02:19:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:19:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:19:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:19:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-12 02:19:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-12 02:19:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-12 02:19:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 02:19:39,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660538467] [2023-11-12 02:19:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660538467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:19:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022945493] [2023-11-12 02:19:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:39,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:19:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:19:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:19:39,033 INFO L87 Difference]: Start difference. First operand 1794 states and 2261 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 02:19:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:40,384 INFO L93 Difference]: Finished difference Result 3060 states and 3760 transitions. [2023-11-12 02:19:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:19:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2023-11-12 02:19:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:40,391 INFO L225 Difference]: With dead ends: 3060 [2023-11-12 02:19:40,391 INFO L226 Difference]: Without dead ends: 1767 [2023-11-12 02:19:40,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:19:40,395 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 685 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:40,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2292 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:19:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2023-11-12 02:19:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1683. [2023-11-12 02:19:40,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1408 states have (on average 1.2819602272727273) internal successors, (1805), 1422 states have internal predecessors, (1805), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2023-11-12 02:19:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2134 transitions. [2023-11-12 02:19:40,569 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2134 transitions. Word has length 159 [2023-11-12 02:19:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:40,569 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2134 transitions. [2023-11-12 02:19:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 02:19:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2134 transitions. [2023-11-12 02:19:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-12 02:19:40,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:40,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:19:40,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1537971240, now seen corresponding path program 1 times [2023-11-12 02:19:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110701704] [2023-11-12 02:19:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat