./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/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_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/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_fc0587c0-09f9-4cda-971a-480db52a4379/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 c665dc43064a88e9fdc5dde4df96c2211b78bc780d85081555cde4301189f544 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:35,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:36,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:36,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:36,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:36,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:36,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:36,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:36,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:36,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:36,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:36,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:36,067 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:36,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:36,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:36,069 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:36,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:36,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:36,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:36,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:36,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:36,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:36,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:36,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:36,073 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:36,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:36,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:36,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:36,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:36,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:36,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:36,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:36,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:36,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:36,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:36,092 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:36,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:36,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:36,093 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:36,093 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_fc0587c0-09f9-4cda-971a-480db52a4379/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c665dc43064a88e9fdc5dde4df96c2211b78bc780d85081555cde4301189f544 [2023-11-12 02:06:36,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,426 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,426 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c [2023-11-12 02:06:39,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:40,390 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:40,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c [2023-11-12 02:06:40,450 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/data/7ad1e8ac3/a6c1b25d255a42d7a132ce188db662bc/FLAGb725f872a [2023-11-12 02:06:40,468 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/data/7ad1e8ac3/a6c1b25d255a42d7a132ce188db662bc [2023-11-12 02:06:40,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:40,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:40,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:40,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:40,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:40,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7137507b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:43,258 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_fc0587c0-09f9-4cda-971a-480db52a4379/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c[380323,380336] [2023-11-12 02:06:43,290 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_fc0587c0-09f9-4cda-971a-480db52a4379/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c[383339,383352] [2023-11-12 02:06:43,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:43,473 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:44,826 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_fc0587c0-09f9-4cda-971a-480db52a4379/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c[380323,380336] [2023-11-12 02:06:44,833 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_fc0587c0-09f9-4cda-971a-480db52a4379/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-1.c[383339,383352] [2023-11-12 02:06:44,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:44,944 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:44,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44 WrapperNode [2023-11-12 02:06:44,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:44,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:44,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:44,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:44,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,431 INFO L138 Inliner]: procedures = 46, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12568 [2023-11-12 02:06:45,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:45,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:45,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:45,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:45,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:45,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:46,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:46,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:46,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:46,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:46,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:46,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:46,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (1/1) ... [2023-11-12 02:06:46,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:46,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:46,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:06:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:06:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:06:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:06:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:06:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:06:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:06:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:06:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:06:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:06:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:06:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:06:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:46,464 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:46,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:56,245 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:56,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:56,277 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 02:06:56,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:56 BoogieIcfgContainer [2023-11-12 02:06:56,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:56,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:56,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:56,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:56,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:40" (1/3) ... [2023-11-12 02:06:56,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52809b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:56, skipping insertion in model container [2023-11-12 02:06:56,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:44" (2/3) ... [2023-11-12 02:06:56,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52809b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:56, skipping insertion in model container [2023-11-12 02:06:56,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:56" (3/3) ... [2023-11-12 02:06:56,290 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.01.cil-1.c [2023-11-12 02:06:56,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:56,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:06:56,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:56,433 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;@5362ca0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:56,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:06:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 2292 states, 2268 states have (on average 1.8580246913580247) internal successors, (4214), 2271 states have internal predecessors, (4214), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 02:06:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:06:56,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,461 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] [2023-11-12 02:06:56,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:56,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -933589418, now seen corresponding path program 1 times [2023-11-12 02:06:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005825346] [2023-11-12 02:06:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:06:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:06:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:06:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:06:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:06:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,960 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 02:06:56,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005825346] [2023-11-12 02:06:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005825346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:06:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902015387] [2023-11-12 02:06:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:06:56,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:06:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:57,008 INFO L87 Difference]: Start difference. First operand has 2292 states, 2268 states have (on average 1.8580246913580247) internal successors, (4214), 2271 states have internal predecessors, (4214), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:06:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:57,966 INFO L93 Difference]: Finished difference Result 4711 states and 8684 transitions. [2023-11-12 02:06:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:06:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-12 02:06:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:57,998 INFO L225 Difference]: With dead ends: 4711 [2023-11-12 02:06:57,999 INFO L226 Difference]: Without dead ends: 2358 [2023-11-12 02:06:58,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:58,014 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4323 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 16474 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:58,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4331 Valid, 16474 Invalid, 482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:06:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2023-11-12 02:06:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2317. [2023-11-12 02:06:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2277 states have (on average 1.8361879666227492) internal successors, (4181), 2280 states have internal predecessors, (4181), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-12 02:06:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 4234 transitions. [2023-11-12 02:06:58,218 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 4234 transitions. Word has length 57 [2023-11-12 02:06:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:58,219 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 4234 transitions. [2023-11-12 02:06:58,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:06:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 4234 transitions. [2023-11-12 02:06:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:06:58,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:58,224 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] [2023-11-12 02:06:58,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:06:58,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:58,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1845541414, now seen corresponding path program 1 times [2023-11-12 02:06:58,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:58,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772326646] [2023-11-12 02:06:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:06:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:06:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:06:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:06:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:06:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,468 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 02:06:58,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772326646] [2023-11-12 02:06:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772326646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260830965] [2023-11-12 02:06:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:58,473 INFO L87 Difference]: Start difference. First operand 2317 states and 4234 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:06:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:59,502 INFO L93 Difference]: Finished difference Result 2655 states and 4714 transitions. [2023-11-12 02:06:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:06:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-12 02:06:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:59,525 INFO L225 Difference]: With dead ends: 2655 [2023-11-12 02:06:59,526 INFO L226 Difference]: Without dead ends: 2468 [2023-11-12 02:06:59,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:06:59,533 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4245 mSDsluCounter, 16317 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 20435 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:59,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 20435 Invalid, 737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:06:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2023-11-12 02:06:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2404. [2023-11-12 02:06:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2347 states have (on average 1.8227524499360885) internal successors, (4278), 2351 states have internal predecessors, (4278), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2023-11-12 02:06:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4353 transitions. [2023-11-12 02:06:59,650 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4353 transitions. Word has length 57 [2023-11-12 02:06:59,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:59,650 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 4353 transitions. [2023-11-12 02:06:59,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:06:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4353 transitions. [2023-11-12 02:06:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:06:59,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:59,658 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] [2023-11-12 02:06:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:06:59,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:59,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash 400038040, now seen corresponding path program 1 times [2023-11-12 02:06:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:59,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432856124] [2023-11-12 02:06:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:06:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:06:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:06:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:06:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:06:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,923 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 02:06:59,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432856124] [2023-11-12 02:06:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432856124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460733582] [2023-11-12 02:06:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:59,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:59,928 INFO L87 Difference]: Start difference. First operand 2404 states and 4353 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:00,977 INFO L93 Difference]: Finished difference Result 2997 states and 5187 transitions. [2023-11-12 02:07:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:07:00,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-12 02:07:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:00,996 INFO L225 Difference]: With dead ends: 2997 [2023-11-12 02:07:00,996 INFO L226 Difference]: Without dead ends: 2723 [2023-11-12 02:07:00,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:07:00,999 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4300 mSDsluCounter, 16309 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4310 SdHoareTripleChecker+Valid, 20423 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:01,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4310 Valid, 20423 Invalid, 731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:07:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2023-11-12 02:07:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2573. [2023-11-12 02:07:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2484 states have (on average 1.7991143317230274) internal successors, (4469), 2490 states have internal predecessors, (4469), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-12 02:07:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4588 transitions. [2023-11-12 02:07:01,111 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4588 transitions. Word has length 57 [2023-11-12 02:07:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:01,112 INFO L495 AbstractCegarLoop]: Abstraction has 2573 states and 4588 transitions. [2023-11-12 02:07:01,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4588 transitions. [2023-11-12 02:07:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:07:01,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:01,114 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] [2023-11-12 02:07:01,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:07:01,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:01,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -497355238, now seen corresponding path program 1 times [2023-11-12 02:07:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:01,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6423288] [2023-11-12 02:07:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:01,244 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 02:07:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6423288] [2023-11-12 02:07:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6423288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:07:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491264817] [2023-11-12 02:07:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:01,248 INFO L87 Difference]: Start difference. First operand 2573 states and 4588 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:02,241 INFO L93 Difference]: Finished difference Result 3531 states and 5930 transitions. [2023-11-12 02:07:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:07:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-12 02:07:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:02,264 INFO L225 Difference]: With dead ends: 3531 [2023-11-12 02:07:02,264 INFO L226 Difference]: Without dead ends: 3088 [2023-11-12 02:07:02,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:07:02,268 INFO L413 NwaCegarLoop]: 4102 mSDtfsCounter, 4240 mSDsluCounter, 16291 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 20393 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:02,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 20393 Invalid, 766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:07:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2023-11-12 02:07:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2880. [2023-11-12 02:07:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2733 states have (on average 1.761068422978412) internal successors, (4813), 2743 states have internal predecessors, (4813), 85 states have call successors, (85), 52 states have call predecessors, (85), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2023-11-12 02:07:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 5018 transitions. [2023-11-12 02:07:02,410 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 5018 transitions. Word has length 57 [2023-11-12 02:07:02,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:02,411 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 5018 transitions. [2023-11-12 02:07:02,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 5018 transitions. [2023-11-12 02:07:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:07:02,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:02,413 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] [2023-11-12 02:07:02,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:07:02,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:02,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash -249208744, now seen corresponding path program 1 times [2023-11-12 02:07:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:02,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698716749] [2023-11-12 02:07:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:02,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,537 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 02:07:02,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698716749] [2023-11-12 02:07:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698716749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:02,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:02,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:07:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991219134] [2023-11-12 02:07:02,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:02,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:02,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:02,540 INFO L87 Difference]: Start difference. First operand 2880 states and 5018 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:03,463 INFO L93 Difference]: Finished difference Result 4245 states and 6940 transitions. [2023-11-12 02:07:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:07:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-12 02:07:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:03,485 INFO L225 Difference]: With dead ends: 4245 [2023-11-12 02:07:03,486 INFO L226 Difference]: Without dead ends: 3496 [2023-11-12 02:07:03,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:03,493 INFO L413 NwaCegarLoop]: 4134 mSDtfsCounter, 4360 mSDsluCounter, 12168 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4383 SdHoareTripleChecker+Valid, 16302 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:03,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4383 Valid, 16302 Invalid, 615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:07:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2023-11-12 02:07:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3291. [2023-11-12 02:07:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3061 states have (on average 1.714799085266253) internal successors, (5249), 3080 states have internal predecessors, (5249), 134 states have call successors, (134), 82 states have call predecessors, (134), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2023-11-12 02:07:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5562 transitions. [2023-11-12 02:07:03,649 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5562 transitions. Word has length 57 [2023-11-12 02:07:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:03,649 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 5562 transitions. [2023-11-12 02:07:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5562 transitions. [2023-11-12 02:07:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:07:03,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:03,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:03,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:07:03,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:03,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:03,655 INFO L85 PathProgramCache]: Analyzing trace with hash -511188062, now seen corresponding path program 1 times [2023-11-12 02:07:03,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:03,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982913574] [2023-11-12 02:07:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:07:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:07:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:07:03,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982913574] [2023-11-12 02:07:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982913574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333630313] [2023-11-12 02:07:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:03,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:03,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:03,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:04,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 02:07:04,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:04,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333630313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:04,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:04,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-12 02:07:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286102675] [2023-11-12 02:07:04,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:04,122 INFO L87 Difference]: Start difference. First operand 3291 states and 5562 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:04,289 INFO L93 Difference]: Finished difference Result 5517 states and 8683 transitions. [2023-11-12 02:07:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2023-11-12 02:07:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:04,318 INFO L225 Difference]: With dead ends: 5517 [2023-11-12 02:07:04,318 INFO L226 Difference]: Without dead ends: 4358 [2023-11-12 02:07:04,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:04,324 INFO L413 NwaCegarLoop]: 4220 mSDtfsCounter, 115 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 8317 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:04,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 8317 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2023-11-12 02:07:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 4358. [2023-11-12 02:07:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 3919 states have (on average 1.6340903291656035) internal successors, (6404), 3951 states have internal predecessors, (6404), 253 states have call successors, (253), 160 states have call predecessors, (253), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2023-11-12 02:07:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 7033 transitions. [2023-11-12 02:07:04,520 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 7033 transitions. Word has length 93 [2023-11-12 02:07:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:04,521 INFO L495 AbstractCegarLoop]: Abstraction has 4358 states and 7033 transitions. [2023-11-12 02:07:04,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 7033 transitions. [2023-11-12 02:07:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-12 02:07:04,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:04,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:07:04,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:04,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:04,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:04,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1537753171, now seen corresponding path program 1 times [2023-11-12 02:07:04,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:04,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834911452] [2023-11-12 02:07:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:04,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:07:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:07:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-12 02:07:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-12 02:07:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834911452] [2023-11-12 02:07:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834911452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:04,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223015915] [2023-11-12 02:07:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:04,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:04,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:04,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:05,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:05,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 02:07:05,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:05,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223015915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:05,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:05,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-12 02:07:05,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081884000] [2023-11-12 02:07:05,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:05,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:05,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:05,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:05,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:05,232 INFO L87 Difference]: Start difference. First operand 4358 states and 7033 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-12 02:07:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:05,485 INFO L93 Difference]: Finished difference Result 8668 states and 12996 transitions. [2023-11-12 02:07:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 120 [2023-11-12 02:07:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:05,553 INFO L225 Difference]: With dead ends: 8668 [2023-11-12 02:07:05,553 INFO L226 Difference]: Without dead ends: 6445 [2023-11-12 02:07:05,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:05,563 INFO L413 NwaCegarLoop]: 4106 mSDtfsCounter, 4027 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4027 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4027 Valid, 4228 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2023-11-12 02:07:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 6387. [2023-11-12 02:07:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6387 states, 5554 states have (on average 1.5482535109830753) internal successors, (8599), 5615 states have internal predecessors, (8599), 473 states have call successors, (473), 310 states have call predecessors, (473), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2023-11-12 02:07:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 9760 transitions. [2023-11-12 02:07:05,875 INFO L78 Accepts]: Start accepts. Automaton has 6387 states and 9760 transitions. Word has length 120 [2023-11-12 02:07:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:05,876 INFO L495 AbstractCegarLoop]: Abstraction has 6387 states and 9760 transitions. [2023-11-12 02:07:05,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-12 02:07:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6387 states and 9760 transitions. [2023-11-12 02:07:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-12 02:07:05,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:05,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 02:07:05,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:06,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:06,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash -782048242, now seen corresponding path program 1 times [2023-11-12 02:07:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:06,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268515763] [2023-11-12 02:07:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:07:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:07:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:07:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-12 02:07:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 02:07:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:06,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268515763] [2023-11-12 02:07:06,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268515763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:06,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407645831] [2023-11-12 02:07:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:06,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:06,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:07:06,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 02:07:06,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407645831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:06,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-12 02:07:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663096199] [2023-11-12 02:07:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:06,565 INFO L87 Difference]: Start difference. First operand 6387 states and 9760 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-12 02:07:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:06,923 INFO L93 Difference]: Finished difference Result 9685 states and 14265 transitions. [2023-11-12 02:07:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2023-11-12 02:07:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:06,954 INFO L225 Difference]: With dead ends: 9685 [2023-11-12 02:07:06,954 INFO L226 Difference]: Without dead ends: 6715 [2023-11-12 02:07:06,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:06,967 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 4059 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:06,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4059 Valid, 4256 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2023-11-12 02:07:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 6677. [2023-11-12 02:07:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6677 states, 5812 states have (on average 1.5232278045423262) internal successors, (8853), 5873 states have internal predecessors, (8853), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2023-11-12 02:07:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6677 states to 6677 states and 10052 transitions. [2023-11-12 02:07:07,412 INFO L78 Accepts]: Start accepts. Automaton has 6677 states and 10052 transitions. Word has length 137 [2023-11-12 02:07:07,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:07,412 INFO L495 AbstractCegarLoop]: Abstraction has 6677 states and 10052 transitions. [2023-11-12 02:07:07,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-12 02:07:07,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6677 states and 10052 transitions. [2023-11-12 02:07:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 02:07:07,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:07,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:07,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:07,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:07,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:07,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1599308267, now seen corresponding path program 1 times [2023-11-12 02:07:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415922884] [2023-11-12 02:07:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:07:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-12 02:07:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-12 02:07:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-12 02:07:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 02:07:07,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:07,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415922884] [2023-11-12 02:07:07,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415922884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:07,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195477892] [2023-11-12 02:07:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:07,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:07,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:07,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:07,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:07:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:07,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-12 02:07:07,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:07,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195477892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:07,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:07,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-12 02:07:07,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692811156] [2023-11-12 02:07:07,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:07,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:07,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:07,975 INFO L87 Difference]: Start difference. First operand 6677 states and 10052 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-12 02:07:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:08,687 INFO L93 Difference]: Finished difference Result 15401 states and 21894 transitions. [2023-11-12 02:07:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 138 [2023-11-12 02:07:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:08,734 INFO L225 Difference]: With dead ends: 15401 [2023-11-12 02:07:08,735 INFO L226 Difference]: Without dead ends: 10861 [2023-11-12 02:07:08,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:08,749 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 115 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 8312 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:08,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 8312 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2023-11-12 02:07:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 10847. [2023-11-12 02:07:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10847 states, 9168 states have (on average 1.43815445026178) internal successors, (13185), 9289 states have internal predecessors, (13185), 925 states have call successors, (925), 656 states have call predecessors, (925), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2023-11-12 02:07:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10847 states to 10847 states and 15660 transitions. [2023-11-12 02:07:09,285 INFO L78 Accepts]: Start accepts. Automaton has 10847 states and 15660 transitions. Word has length 138 [2023-11-12 02:07:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:09,287 INFO L495 AbstractCegarLoop]: Abstraction has 10847 states and 15660 transitions. [2023-11-12 02:07:09,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-12 02:07:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10847 states and 15660 transitions. [2023-11-12 02:07:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:07:09,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:09,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:09,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:09,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:09,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:09,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash 657886781, now seen corresponding path program 1 times [2023-11-12 02:07:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:09,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703516895] [2023-11-12 02:07:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:07:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:07:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703516895] [2023-11-12 02:07:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703516895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073820589] [2023-11-12 02:07:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:09,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:09,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:07:09,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:07:09,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:09,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073820589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:09,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:09,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-12 02:07:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583080617] [2023-11-12 02:07:09,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:09,843 INFO L87 Difference]: Start difference. First operand 10847 states and 15660 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-12 02:07:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:10,509 INFO L93 Difference]: Finished difference Result 15375 states and 22056 transitions. [2023-11-12 02:07:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 139 [2023-11-12 02:07:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:10,552 INFO L225 Difference]: With dead ends: 15375 [2023-11-12 02:07:10,552 INFO L226 Difference]: Without dead ends: 10881 [2023-11-12 02:07:10,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:10,568 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 100 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 8273 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:10,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 8273 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10881 states. [2023-11-12 02:07:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10881 to 10823. [2023-11-12 02:07:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10823 states, 9144 states have (on average 1.4248687664041995) internal successors, (13029), 9265 states have internal predecessors, (13029), 925 states have call successors, (925), 656 states have call predecessors, (925), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2023-11-12 02:07:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10823 states to 10823 states and 15504 transitions. [2023-11-12 02:07:11,086 INFO L78 Accepts]: Start accepts. Automaton has 10823 states and 15504 transitions. Word has length 139 [2023-11-12 02:07:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:11,087 INFO L495 AbstractCegarLoop]: Abstraction has 10823 states and 15504 transitions. [2023-11-12 02:07:11,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-12 02:07:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 10823 states and 15504 transitions. [2023-11-12 02:07:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:07:11,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:11,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:11,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:11,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:11,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:11,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:11,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1557277189, now seen corresponding path program 1 times [2023-11-12 02:07:11,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:11,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906929955] [2023-11-12 02:07:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:11,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:07:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:07:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:11,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906929955] [2023-11-12 02:07:11,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906929955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:11,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640130170] [2023-11-12 02:07:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:11,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:11,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:07:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:11,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:07:11,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640130170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:11,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:11,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-12 02:07:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578256722] [2023-11-12 02:07:11,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:11,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:11,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:11,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:11,650 INFO L87 Difference]: Start difference. First operand 10823 states and 15504 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 02:07:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:12,149 INFO L93 Difference]: Finished difference Result 17233 states and 24276 transitions. [2023-11-12 02:07:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 139 [2023-11-12 02:07:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:12,184 INFO L225 Difference]: With dead ends: 17233 [2023-11-12 02:07:12,184 INFO L226 Difference]: Without dead ends: 9603 [2023-11-12 02:07:12,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:12,206 INFO L413 NwaCegarLoop]: 4102 mSDtfsCounter, 4078 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4078 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:12,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4078 Valid, 4126 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9603 states. [2023-11-12 02:07:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9603 to 9155. [2023-11-12 02:07:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9155 states, 7802 states have (on average 1.4097667264803897) internal successors, (10999), 7891 states have internal predecessors, (10999), 753 states have call successors, (753), 534 states have call predecessors, (753), 598 states have return successors, (1098), 745 states have call predecessors, (1098), 753 states have call successors, (1098) [2023-11-12 02:07:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9155 states to 9155 states and 12850 transitions. [2023-11-12 02:07:12,648 INFO L78 Accepts]: Start accepts. Automaton has 9155 states and 12850 transitions. Word has length 139 [2023-11-12 02:07:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:12,649 INFO L495 AbstractCegarLoop]: Abstraction has 9155 states and 12850 transitions. [2023-11-12 02:07:12,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 02:07:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9155 states and 12850 transitions. [2023-11-12 02:07:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:07:12,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:12,667 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:12,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:12,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:07:12,873 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:12,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash -594645104, now seen corresponding path program 1 times [2023-11-12 02:07:12,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:12,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858031416] [2023-11-12 02:07:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:07:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:07:13,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858031416] [2023-11-12 02:07:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858031416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269789500] [2023-11-12 02:07:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:13,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:13,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:07:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:13,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-12 02:07:13,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:13,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269789500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:13,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:13,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-12 02:07:13,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563172808] [2023-11-12 02:07:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:13,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:13,280 INFO L87 Difference]: Start difference. First operand 9155 states and 12850 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:13,905 INFO L93 Difference]: Finished difference Result 11893 states and 16439 transitions. [2023-11-12 02:07:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2023-11-12 02:07:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:13,934 INFO L225 Difference]: With dead ends: 11893 [2023-11-12 02:07:13,934 INFO L226 Difference]: Without dead ends: 7339 [2023-11-12 02:07:13,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:13,949 INFO L413 NwaCegarLoop]: 4049 mSDtfsCounter, 4096 mSDsluCounter, 8057 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 12106 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:13,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 12106 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:13,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2023-11-12 02:07:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 7315. [2023-11-12 02:07:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 6320 states have (on average 1.428006329113924) internal successors, (9025), 6373 states have internal predecessors, (9025), 565 states have call successors, (565), 396 states have call predecessors, (565), 428 states have return successors, (766), 553 states have call predecessors, (766), 565 states have call successors, (766) [2023-11-12 02:07:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 10356 transitions. [2023-11-12 02:07:14,456 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 10356 transitions. Word has length 140 [2023-11-12 02:07:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:14,457 INFO L495 AbstractCegarLoop]: Abstraction has 7315 states and 10356 transitions. [2023-11-12 02:07:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 10356 transitions. [2023-11-12 02:07:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:07:14,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:14,470 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:14,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:14,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:14,678 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:14,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash -476203630, now seen corresponding path program 1 times [2023-11-12 02:07:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:14,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41284726] [2023-11-12 02:07:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:14,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:07:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:07:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41284726] [2023-11-12 02:07:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41284726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834434720] [2023-11-12 02:07:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:14,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:14,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:07:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:15,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:15,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-12 02:07:15,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:15,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834434720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:15,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:15,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-12 02:07:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928865856] [2023-11-12 02:07:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:15,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:15,125 INFO L87 Difference]: Start difference. First operand 7315 states and 10356 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:15,772 INFO L93 Difference]: Finished difference Result 11545 states and 15786 transitions. [2023-11-12 02:07:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2023-11-12 02:07:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:15,808 INFO L225 Difference]: With dead ends: 11545 [2023-11-12 02:07:15,808 INFO L226 Difference]: Without dead ends: 6953 [2023-11-12 02:07:15,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:15,826 INFO L413 NwaCegarLoop]: 4047 mSDtfsCounter, 4134 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 12099 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:15,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4143 Valid, 12099 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2023-11-12 02:07:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 5221. [2023-11-12 02:07:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 4646 states have (on average 1.4829961256995265) internal successors, (6890), 4675 states have internal predecessors, (6890), 329 states have call successors, (329), 228 states have call predecessors, (329), 244 states have return successors, (439), 321 states have call predecessors, (439), 329 states have call successors, (439) [2023-11-12 02:07:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 7658 transitions. [2023-11-12 02:07:16,265 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 7658 transitions. Word has length 140 [2023-11-12 02:07:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:16,265 INFO L495 AbstractCegarLoop]: Abstraction has 5221 states and 7658 transitions. [2023-11-12 02:07:16,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 7658 transitions. [2023-11-12 02:07:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:07:16,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:16,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:07:16,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:16,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:16,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:16,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash 913090384, now seen corresponding path program 1 times [2023-11-12 02:07:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947471025] [2023-11-12 02:07:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:07:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:07:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947471025] [2023-11-12 02:07:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947471025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365103216] [2023-11-12 02:07:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:16,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:16,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:07:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:07:16,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-12 02:07:16,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365103216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:16,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:16,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-11-12 02:07:16,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594435919] [2023-11-12 02:07:16,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:16,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:16,783 INFO L87 Difference]: Start difference. First operand 5221 states and 7658 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:17,036 INFO L93 Difference]: Finished difference Result 7267 states and 10160 transitions. [2023-11-12 02:07:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2023-11-12 02:07:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:17,049 INFO L225 Difference]: With dead ends: 7267 [2023-11-12 02:07:17,049 INFO L226 Difference]: Without dead ends: 4180 [2023-11-12 02:07:17,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:17,060 INFO L413 NwaCegarLoop]: 4092 mSDtfsCounter, 35 mSDsluCounter, 12276 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 16368 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:17,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 16368 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2023-11-12 02:07:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4144. [2023-11-12 02:07:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 3777 states have (on average 1.5467302091607096) internal successors, (5842), 3796 states have internal predecessors, (5842), 207 states have call successors, (207), 146 states have call predecessors, (207), 158 states have return successors, (252), 203 states have call predecessors, (252), 207 states have call successors, (252) [2023-11-12 02:07:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 6301 transitions. [2023-11-12 02:07:17,221 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 6301 transitions. Word has length 140 [2023-11-12 02:07:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:17,222 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 6301 transitions. [2023-11-12 02:07:17,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 6301 transitions. [2023-11-12 02:07:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:07:17,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:17,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:07:17,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:17,436 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:17,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1014176332, now seen corresponding path program 1 times [2023-11-12 02:07:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:17,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674119955] [2023-11-12 02:07:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:07:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-12 02:07:17,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674119955] [2023-11-12 02:07:17,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674119955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561971760] [2023-11-12 02:07:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:17,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:17,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:17,596 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:17,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:07:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:07:17,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-12 02:07:17,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:17,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561971760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:17,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-11-12 02:07:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400015811] [2023-11-12 02:07:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:17,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:17,747 INFO L87 Difference]: Start difference. First operand 4144 states and 6301 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:17,928 INFO L93 Difference]: Finished difference Result 5340 states and 7706 transitions. [2023-11-12 02:07:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2023-11-12 02:07:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:17,937 INFO L225 Difference]: With dead ends: 5340 [2023-11-12 02:07:17,938 INFO L226 Difference]: Without dead ends: 2913 [2023-11-12 02:07:17,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:17,944 INFO L413 NwaCegarLoop]: 4091 mSDtfsCounter, 7 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16360 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:17,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16360 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:17,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2023-11-12 02:07:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2913. [2023-11-12 02:07:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2767 states have (on average 1.6884712685218648) internal successors, (4672), 2775 states have internal predecessors, (4672), 83 states have call successors, (83), 57 states have call predecessors, (83), 61 states have return successors, (87), 81 states have call predecessors, (87), 83 states have call successors, (87) [2023-11-12 02:07:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 4842 transitions. [2023-11-12 02:07:18,032 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 4842 transitions. Word has length 140 [2023-11-12 02:07:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:18,033 INFO L495 AbstractCegarLoop]: Abstraction has 2913 states and 4842 transitions. [2023-11-12 02:07:18,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:07:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 4842 transitions. [2023-11-12 02:07:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:07:18,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:18,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:07:18,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:18,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0587c0-09f9-4cda-971a-480db52a4379/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:07:18,242 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:18,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash -976625780, now seen corresponding path program 1 times [2023-11-12 02:07:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692943098] [2023-11-12 02:07:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:07:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:07:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:07:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:07:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:07:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:07:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:07:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-12 02:07:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:07:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:07:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:07:18,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:18,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692943098] [2023-11-12 02:07:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692943098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:18,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:07:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193458302] [2023-11-12 02:07:18,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:18,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:18,423 INFO L87 Difference]: Start difference. First operand 2913 states and 4842 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 02:07:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:19,037 INFO L93 Difference]: Finished difference Result 2933 states and 4862 transitions. [2023-11-12 02:07:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:07:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 140 [2023-11-12 02:07:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:19,046 INFO L225 Difference]: With dead ends: 2933 [2023-11-12 02:07:19,046 INFO L226 Difference]: Without dead ends: 2123 [2023-11-12 02:07:19,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:19,054 INFO L413 NwaCegarLoop]: 4098 mSDtfsCounter, 4309 mSDsluCounter, 12127 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 16225 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:19,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 16225 Invalid, 390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:07:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2023-11-12 02:07:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2023-11-12 02:07:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2023-11-12 02:07:19,099 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 140 [2023-11-12 02:07:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:19,100 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2023-11-12 02:07:19,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 02:07:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2023-11-12 02:07:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2023-11-12 02:07:19,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:19,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:07:19,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:19,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash -365475227, now seen corresponding path program 1 times [2023-11-12 02:07:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:19,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451668276] [2023-11-12 02:07:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat