./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:53:36,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:53:36,224 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:53:36,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:53:36,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:53:36,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:53:36,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:53:36,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:53:36,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:53:36,253 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:53:36,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:53:36,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:53:36,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:53:36,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:53:36,256 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:53:36,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:53:36,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:53:36,258 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:53:36,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:53:36,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:53:36,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:53:36,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:53:36,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:53:36,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:53:36,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:53:36,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:53:36,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:53:36,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:53:36,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:53:36,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:53:36,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:53:36,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:53:36,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:53:36,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:53:36,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:53:36,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:53:36,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:53:36,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:53:36,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:53:36,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:53:36,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:53:36,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:53:36,267 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_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 [2023-11-29 03:53:36,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:53:36,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:53:36,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:53:36,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:53:36,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:53:36,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2023-11-29 03:53:39,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:53:39,822 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:53:39,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2023-11-29 03:53:39,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/data/fe5fe503b/4a07594152114b01981ce7dfaba1eda6/FLAGbbc279374 [2023-11-29 03:53:39,886 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/data/fe5fe503b/4a07594152114b01981ce7dfaba1eda6 [2023-11-29 03:53:39,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:53:39,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:53:39,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:53:39,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:53:39,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:53:39,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:53:39" (1/1) ... [2023-11-29 03:53:39,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec7e70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:39, skipping insertion in model container [2023-11-29 03:53:39,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:53:39" (1/1) ... [2023-11-29 03:53:40,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:53:41,814 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_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2023-11-29 03:53:41,843 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_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2023-11-29 03:53:42,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:53:42,058 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:53:42,973 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2023-11-29 03:53:42,977 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_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2023-11-29 03:53:42,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:53:43,045 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:53:43,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43 WrapperNode [2023-11-29 03:53:43,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:53:43,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:53:43,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:53:43,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:53:43,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,395 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12814 [2023-11-29 03:53:43,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:53:43,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:53:43,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:53:43,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:53:43,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,563 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 03:53:43,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:53:43,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:53:43,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:53:43,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:53:43,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (1/1) ... [2023-11-29 03:53:43,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:53:43,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:53:44,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:53:44,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:53:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:53:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 03:53:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 03:53:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 03:53:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 03:53:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 03:53:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 03:53:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-29 03:53:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-29 03:53:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 03:53:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 03:53:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 03:53:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 03:53:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 03:53:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 03:53:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:53:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:53:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:53:44,141 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:53:44,144 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:53:51,666 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:53:51,762 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:53:51,762 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-29 03:53:51,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:53:51 BoogieIcfgContainer [2023-11-29 03:53:51,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:53:51,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:53:51,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:53:51,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:53:51,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:53:39" (1/3) ... [2023-11-29 03:53:51,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4531131c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:53:51, skipping insertion in model container [2023-11-29 03:53:51,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:53:43" (2/3) ... [2023-11-29 03:53:51,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4531131c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:53:51, skipping insertion in model container [2023-11-29 03:53:51,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:53:51" (3/3) ... [2023-11-29 03:53:51,773 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-2.c [2023-11-29 03:53:51,789 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:53:51,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 03:53:51,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:53:51,887 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;@3c31a35e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:53:51,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:53:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-29 03:53:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:53:51,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:51,914 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] [2023-11-29 03:53:51,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:51,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash 945865180, now seen corresponding path program 1 times [2023-11-29 03:53:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725337087] [2023-11-29 03:53:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:53:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:53:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:53:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:53:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:53:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:53:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725337087] [2023-11-29 03:53:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725337087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:53:52,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:53:52,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:53:52,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726182580] [2023-11-29 03:53:52,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:53:52,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:53:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:53:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:53:52,380 INFO L87 Difference]: Start difference. First operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:53:53,490 INFO L93 Difference]: Finished difference Result 4689 states and 8790 transitions. [2023-11-29 03:53:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:53:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:53:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:53:53,518 INFO L225 Difference]: With dead ends: 4689 [2023-11-29 03:53:53,518 INFO L226 Difference]: Without dead ends: 2373 [2023-11-29 03:53:53,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:53:53,530 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 494 mSDsluCounter, 12068 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 16203 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:53:53,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 16203 Invalid, 571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:53:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-11-29 03:53:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2313. [2023-11-29 03:53:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2284 states have (on average 1.8476357267950962) internal successors, (4220), 2287 states have internal predecessors, (4220), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 03:53:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4260 transitions. [2023-11-29 03:53:53,655 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4260 transitions. Word has length 92 [2023-11-29 03:53:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:53:53,656 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 4260 transitions. [2023-11-29 03:53:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4260 transitions. [2023-11-29 03:53:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:53:53,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:53,662 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] [2023-11-29 03:53:53,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:53:53,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:53,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:53,663 INFO L85 PathProgramCache]: Analyzing trace with hash -378991014, now seen corresponding path program 1 times [2023-11-29 03:53:53,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:53,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984185781] [2023-11-29 03:53:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:53,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:53:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:53:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:53:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:53:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:53:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:53:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984185781] [2023-11-29 03:53:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984185781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:53:53,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:53:53,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:53:53,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566063470] [2023-11-29 03:53:53,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:53:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:53:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:53:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:53:53,904 INFO L87 Difference]: Start difference. First operand 2313 states and 4260 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:53:55,484 INFO L93 Difference]: Finished difference Result 2800 states and 5052 transitions. [2023-11-29 03:53:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:53:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:53:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:53:55,502 INFO L225 Difference]: With dead ends: 2800 [2023-11-29 03:53:55,502 INFO L226 Difference]: Without dead ends: 2619 [2023-11-29 03:53:55,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:53:55,506 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4687 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 16438 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:53:55,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 16438 Invalid, 1208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:53:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2023-11-29 03:53:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2498. [2023-11-29 03:53:55,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2448 states have (on average 1.8321078431372548) internal successors, (4485), 2452 states have internal predecessors, (4485), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-29 03:53:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4556 transitions. [2023-11-29 03:53:55,602 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4556 transitions. Word has length 92 [2023-11-29 03:53:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:53:55,603 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4556 transitions. [2023-11-29 03:53:55,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4556 transitions. [2023-11-29 03:53:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:53:55,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:55,606 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] [2023-11-29 03:53:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:53:55,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:55,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 482674902, now seen corresponding path program 1 times [2023-11-29 03:53:55,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:55,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572172901] [2023-11-29 03:53:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:55,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:53:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:53:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:53:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:53:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:53:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:53:55,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572172901] [2023-11-29 03:53:55,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572172901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:53:55,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:53:55,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:53:55,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103368849] [2023-11-29 03:53:55,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:53:55,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:53:55,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:53:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:53:55,833 INFO L87 Difference]: Start difference. First operand 2498 states and 4556 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:53:57,784 INFO L93 Difference]: Finished difference Result 3235 states and 5750 transitions. [2023-11-29 03:53:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:53:57,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:53:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:53:57,798 INFO L225 Difference]: With dead ends: 3235 [2023-11-29 03:53:57,798 INFO L226 Difference]: Without dead ends: 2869 [2023-11-29 03:53:57,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:53:57,801 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4702 mSDsluCounter, 16709 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 20941 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:53:57,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4714 Valid, 20941 Invalid, 1888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:53:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2023-11-29 03:53:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2670. [2023-11-29 03:53:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8176221623701423) internal successors, (4724), 2604 states have internal predecessors, (4724), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 03:53:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4825 transitions. [2023-11-29 03:53:57,870 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4825 transitions. Word has length 92 [2023-11-29 03:53:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:53:57,871 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4825 transitions. [2023-11-29 03:53:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4825 transitions. [2023-11-29 03:53:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:53:57,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:57,873 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] [2023-11-29 03:53:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:53:57,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:57,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 509740504, now seen corresponding path program 1 times [2023-11-29 03:53:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963039498] [2023-11-29 03:53:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:57,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:53:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:53:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:53:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:53:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:53:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:53:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:58,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963039498] [2023-11-29 03:53:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963039498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:53:58,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:53:58,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:53:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068085002] [2023-11-29 03:53:58,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:53:58,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:53:58,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:53:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:53:58,054 INFO L87 Difference]: Start difference. First operand 2670 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:53:58,988 INFO L93 Difference]: Finished difference Result 3409 states and 6031 transitions. [2023-11-29 03:53:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:53:58,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:53:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:53:59,006 INFO L225 Difference]: With dead ends: 3409 [2023-11-29 03:53:59,006 INFO L226 Difference]: Without dead ends: 2871 [2023-11-29 03:53:59,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:53:59,010 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4506 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:53:59,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 20363 Invalid, 979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:53:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-11-29 03:53:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2670. [2023-11-29 03:53:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.816467872258561) internal successors, (4721), 2604 states have internal predecessors, (4721), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 03:53:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4822 transitions. [2023-11-29 03:53:59,108 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4822 transitions. Word has length 92 [2023-11-29 03:53:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:53:59,109 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4822 transitions. [2023-11-29 03:53:59,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:53:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4822 transitions. [2023-11-29 03:53:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:53:59,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:53:59,111 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] [2023-11-29 03:53:59,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:53:59,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:53:59,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:53:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2051122342, now seen corresponding path program 1 times [2023-11-29 03:53:59,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:53:59,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089043444] [2023-11-29 03:53:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:53:59,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:53:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:53:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:53:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:53:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:53:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:53:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:53:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:53:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:53:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089043444] [2023-11-29 03:53:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089043444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:53:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:53:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:53:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363919548] [2023-11-29 03:53:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:53:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:53:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:53:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:53:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:53:59,282 INFO L87 Difference]: Start difference. First operand 2670 states and 4822 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:00,218 INFO L93 Difference]: Finished difference Result 3405 states and 6014 transitions. [2023-11-29 03:54:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:54:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:00,230 INFO L225 Difference]: With dead ends: 3405 [2023-11-29 03:54:00,230 INFO L226 Difference]: Without dead ends: 2867 [2023-11-29 03:54:00,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:54:00,233 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4504 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:00,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4517 Valid, 20363 Invalid, 963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:54:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2023-11-29 03:54:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2670. [2023-11-29 03:54:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8153135821469797) internal successors, (4718), 2604 states have internal predecessors, (4718), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 03:54:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4819 transitions. [2023-11-29 03:54:00,298 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4819 transitions. Word has length 92 [2023-11-29 03:54:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:00,298 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4819 transitions. [2023-11-29 03:54:00,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4819 transitions. [2023-11-29 03:54:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:00,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:00,300 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] [2023-11-29 03:54:00,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:54:00,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:00,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1163899496, now seen corresponding path program 1 times [2023-11-29 03:54:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228935299] [2023-11-29 03:54:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:00,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:00,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:00,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228935299] [2023-11-29 03:54:00,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228935299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:00,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:00,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:54:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303785037] [2023-11-29 03:54:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:54:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:54:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:00,438 INFO L87 Difference]: Start difference. First operand 2670 states and 4819 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:01,409 INFO L93 Difference]: Finished difference Result 3401 states and 5997 transitions. [2023-11-29 03:54:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:54:01,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:01,421 INFO L225 Difference]: With dead ends: 3401 [2023-11-29 03:54:01,422 INFO L226 Difference]: Without dead ends: 2863 [2023-11-29 03:54:01,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:54:01,424 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4502 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:01,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4515 Valid, 20363 Invalid, 947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:54:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2023-11-29 03:54:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2670. [2023-11-29 03:54:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8141592920353982) internal successors, (4715), 2604 states have internal predecessors, (4715), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 03:54:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4816 transitions. [2023-11-29 03:54:01,507 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4816 transitions. Word has length 92 [2023-11-29 03:54:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:01,508 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4816 transitions. [2023-11-29 03:54:01,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4816 transitions. [2023-11-29 03:54:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:01,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:01,510 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] [2023-11-29 03:54:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:54:01,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:01,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1220025242, now seen corresponding path program 1 times [2023-11-29 03:54:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:01,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120128298] [2023-11-29 03:54:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:01,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120128298] [2023-11-29 03:54:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120128298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:01,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:01,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:54:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537183532] [2023-11-29 03:54:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:54:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:54:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:01,685 INFO L87 Difference]: Start difference. First operand 2670 states and 4816 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:03,436 INFO L93 Difference]: Finished difference Result 3995 states and 6919 transitions. [2023-11-29 03:54:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:54:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:03,453 INFO L225 Difference]: With dead ends: 3995 [2023-11-29 03:54:03,453 INFO L226 Difference]: Without dead ends: 3457 [2023-11-29 03:54:03,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:54:03,457 INFO L413 NwaCegarLoop]: 4125 mSDtfsCounter, 4914 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 20541 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:03,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 20541 Invalid, 1538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:54:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-11-29 03:54:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3023. [2023-11-29 03:54:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2912 states have (on average 1.7870879120879122) internal successors, (5204), 2919 states have internal predecessors, (5204), 75 states have call successors, (75), 31 states have call predecessors, (75), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-11-29 03:54:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 5365 transitions. [2023-11-29 03:54:03,599 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 5365 transitions. Word has length 92 [2023-11-29 03:54:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:03,599 INFO L495 AbstractCegarLoop]: Abstraction has 3023 states and 5365 transitions. [2023-11-29 03:54:03,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 5365 transitions. [2023-11-29 03:54:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:03,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:03,602 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] [2023-11-29 03:54:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:54:03,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:03,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1296926040, now seen corresponding path program 1 times [2023-11-29 03:54:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532142032] [2023-11-29 03:54:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:03,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:03,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:03,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:03,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532142032] [2023-11-29 03:54:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532142032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:03,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:03,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:54:03,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617174341] [2023-11-29 03:54:03,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:54:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:03,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:54:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:03,804 INFO L87 Difference]: Start difference. First operand 3023 states and 5365 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:05,734 INFO L93 Difference]: Finished difference Result 5308 states and 8978 transitions. [2023-11-29 03:54:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:54:05,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:05,757 INFO L225 Difference]: With dead ends: 5308 [2023-11-29 03:54:05,757 INFO L226 Difference]: Without dead ends: 4417 [2023-11-29 03:54:05,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:54:05,763 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4711 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4722 SdHoareTripleChecker+Valid, 20928 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:05,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4722 Valid, 20928 Invalid, 2057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:54:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2023-11-29 03:54:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3680. [2023-11-29 03:54:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3491 states have (on average 1.7462045259238042) internal successors, (6096), 3502 states have internal predecessors, (6096), 125 states have call successors, (125), 55 states have call predecessors, (125), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-11-29 03:54:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 6379 transitions. [2023-11-29 03:54:05,913 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 6379 transitions. Word has length 92 [2023-11-29 03:54:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:05,914 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 6379 transitions. [2023-11-29 03:54:05,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 6379 transitions. [2023-11-29 03:54:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:05,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:05,917 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] [2023-11-29 03:54:05,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:54:05,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:05,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash 329575386, now seen corresponding path program 1 times [2023-11-29 03:54:05,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731401319] [2023-11-29 03:54:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:06,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731401319] [2023-11-29 03:54:06,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731401319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:06,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:06,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:54:06,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103248423] [2023-11-29 03:54:06,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:06,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:54:06,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:54:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:06,112 INFO L87 Difference]: Start difference. First operand 3680 states and 6379 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:07,780 INFO L93 Difference]: Finished difference Result 7751 states and 12786 transitions. [2023-11-29 03:54:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:54:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:07,798 INFO L225 Difference]: With dead ends: 7751 [2023-11-29 03:54:07,798 INFO L226 Difference]: Without dead ends: 6203 [2023-11-29 03:54:07,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:54:07,804 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4792 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:07,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 20932 Invalid, 1761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:54:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2023-11-29 03:54:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5033. [2023-11-29 03:54:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4692 states have (on average 1.696078431372549) internal successors, (7958), 4711 states have internal predecessors, (7958), 221 states have call successors, (221), 103 states have call predecessors, (221), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-11-29 03:54:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 8495 transitions. [2023-11-29 03:54:07,963 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 8495 transitions. Word has length 92 [2023-11-29 03:54:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:07,963 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 8495 transitions. [2023-11-29 03:54:07,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 8495 transitions. [2023-11-29 03:54:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:07,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:07,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:54:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:54:07,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:07,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2056934120, now seen corresponding path program 1 times [2023-11-29 03:54:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233621644] [2023-11-29 03:54:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233621644] [2023-11-29 03:54:08,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233621644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:08,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:54:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417818075] [2023-11-29 03:54:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:54:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:54:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:08,112 INFO L87 Difference]: Start difference. First operand 5033 states and 8495 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:09,879 INFO L93 Difference]: Finished difference Result 12630 states and 20476 transitions. [2023-11-29 03:54:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:54:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:09,900 INFO L225 Difference]: With dead ends: 12630 [2023-11-29 03:54:09,900 INFO L226 Difference]: Without dead ends: 9729 [2023-11-29 03:54:09,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:54:09,909 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4762 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:09,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4780 Valid, 20932 Invalid, 1743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:54:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2023-11-29 03:54:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 7738. [2023-11-29 03:54:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7101 states have (on average 1.6470919588790311) internal successors, (11696), 7136 states have internal predecessors, (11696), 405 states have call successors, (405), 199 states have call predecessors, (405), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-11-29 03:54:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 12779 transitions. [2023-11-29 03:54:10,236 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 12779 transitions. Word has length 92 [2023-11-29 03:54:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:10,236 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 12779 transitions. [2023-11-29 03:54:10,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:10,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 12779 transitions. [2023-11-29 03:54:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:10,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:10,244 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] [2023-11-29 03:54:10,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:54:10,244 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:10,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1745407002, now seen corresponding path program 1 times [2023-11-29 03:54:10,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:10,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179162098] [2023-11-29 03:54:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:10,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179162098] [2023-11-29 03:54:10,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179162098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:10,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:10,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:54:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574644730] [2023-11-29 03:54:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:10,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:54:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:54:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:10,466 INFO L87 Difference]: Start difference. First operand 7738 states and 12779 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:12,605 INFO L93 Difference]: Finished difference Result 21731 states and 35014 transitions. [2023-11-29 03:54:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:54:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:12,643 INFO L225 Difference]: With dead ends: 21731 [2023-11-29 03:54:12,643 INFO L226 Difference]: Without dead ends: 16125 [2023-11-29 03:54:12,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:54:12,667 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4684 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:12,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 20932 Invalid, 1715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:54:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2023-11-29 03:54:13,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 13180. [2023-11-29 03:54:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 11967 states have (on average 1.6100944263390993) internal successors, (19268), 12034 states have internal predecessors, (19268), 757 states have call successors, (757), 391 states have call predecessors, (757), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-11-29 03:54:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 21573 transitions. [2023-11-29 03:54:13,326 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 21573 transitions. Word has length 92 [2023-11-29 03:54:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:13,327 INFO L495 AbstractCegarLoop]: Abstraction has 13180 states and 21573 transitions. [2023-11-29 03:54:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 21573 transitions. [2023-11-29 03:54:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:54:13,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:13,335 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] [2023-11-29 03:54:13,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:54:13,335 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:13,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash 529253276, now seen corresponding path program 1 times [2023-11-29 03:54:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265032261] [2023-11-29 03:54:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:13,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:13,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:54:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265032261] [2023-11-29 03:54:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265032261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:13,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:54:13,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:54:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059760890] [2023-11-29 03:54:13,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:13,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:54:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:54:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:54:13,451 INFO L87 Difference]: Start difference. First operand 13180 states and 21573 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:15,630 INFO L93 Difference]: Finished difference Result 33458 states and 53843 transitions. [2023-11-29 03:54:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:54:15,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-11-29 03:54:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:15,674 INFO L225 Difference]: With dead ends: 33458 [2023-11-29 03:54:15,674 INFO L226 Difference]: Without dead ends: 22411 [2023-11-29 03:54:15,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:54:15,703 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4889 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4920 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:15,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4920 Valid, 16668 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:54:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22411 states. [2023-11-29 03:54:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 18624. [2023-11-29 03:54:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 16782 states have (on average 1.5839590036944344) internal successors, (26582), 16914 states have internal predecessors, (26582), 1156 states have call successors, (1156), 589 states have call predecessors, (1156), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-11-29 03:54:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 29929 transitions. [2023-11-29 03:54:16,455 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 29929 transitions. Word has length 92 [2023-11-29 03:54:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:16,456 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 29929 transitions. [2023-11-29 03:54:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:54:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 29929 transitions. [2023-11-29 03:54:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 03:54:16,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:16,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:54:16,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:54:16,489 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:16,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1655270481, now seen corresponding path program 1 times [2023-11-29 03:54:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121508129] [2023-11-29 03:54:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:54:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:54:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:54:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:54:16,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:16,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121508129] [2023-11-29 03:54:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121508129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:54:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531579875] [2023-11-29 03:54:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:16,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:54:16,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:54:16,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:54:16,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:54:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:16,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:54:16,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:54:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 03:54:16,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:54:16,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531579875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:16,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:54:16,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 03:54:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923599677] [2023-11-29 03:54:16,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:16,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:16,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:16,888 INFO L87 Difference]: Start difference. First operand 18624 states and 29929 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:54:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:18,173 INFO L93 Difference]: Finished difference Result 51207 states and 81635 transitions. [2023-11-29 03:54:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:18,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-11-29 03:54:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:18,252 INFO L225 Difference]: With dead ends: 51207 [2023-11-29 03:54:18,252 INFO L226 Difference]: Without dead ends: 34716 [2023-11-29 03:54:18,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:18,285 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4203 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:18,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4203 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:54:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34716 states. [2023-11-29 03:54:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34716 to 34614. [2023-11-29 03:54:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34614 states, 31040 states have (on average 1.562596649484536) internal successors, (48503), 31301 states have internal predecessors, (48503), 2206 states have call successors, (2206), 1175 states have call predecessors, (2206), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-11-29 03:54:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34614 states to 34614 states and 54924 transitions. [2023-11-29 03:54:19,609 INFO L78 Accepts]: Start accepts. Automaton has 34614 states and 54924 transitions. Word has length 148 [2023-11-29 03:54:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:19,609 INFO L495 AbstractCegarLoop]: Abstraction has 34614 states and 54924 transitions. [2023-11-29 03:54:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:54:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 34614 states and 54924 transitions. [2023-11-29 03:54:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 03:54:19,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:19,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:54:19,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:54:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:54:19,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:19,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -809491181, now seen corresponding path program 1 times [2023-11-29 03:54:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678235438] [2023-11-29 03:54:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:19,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:54:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:54:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:54:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:54:20,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:20,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678235438] [2023-11-29 03:54:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678235438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:54:20,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374264379] [2023-11-29 03:54:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:20,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:54:20,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:54:20,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:54:20,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:54:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:20,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:54:20,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:54:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:54:20,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:54:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374264379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:54:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 03:54:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614043529] [2023-11-29 03:54:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:20,249 INFO L87 Difference]: Start difference. First operand 34614 states and 54924 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:54:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:22,793 INFO L93 Difference]: Finished difference Result 98977 states and 156780 transitions. [2023-11-29 03:54:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:22,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-11-29 03:54:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:22,966 INFO L225 Difference]: With dead ends: 98977 [2023-11-29 03:54:22,966 INFO L226 Difference]: Without dead ends: 66496 [2023-11-29 03:54:23,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:23,025 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4193 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:23,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4193 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:54:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66496 states. [2023-11-29 03:54:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66496 to 66296. [2023-11-29 03:54:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66296 states, 59260 states have (on average 1.5483462706716167) internal successors, (91755), 59779 states have internal predecessors, (91755), 4304 states have call successors, (4304), 2347 states have call predecessors, (4304), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-11-29 03:54:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66296 states to 66296 states and 104320 transitions. [2023-11-29 03:54:25,791 INFO L78 Accepts]: Start accepts. Automaton has 66296 states and 104320 transitions. Word has length 148 [2023-11-29 03:54:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:25,791 INFO L495 AbstractCegarLoop]: Abstraction has 66296 states and 104320 transitions. [2023-11-29 03:54:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:54:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 66296 states and 104320 transitions. [2023-11-29 03:54:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 03:54:25,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:25,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:54:25,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:54:26,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:54:26,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:26,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1463777195, now seen corresponding path program 1 times [2023-11-29 03:54:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:26,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952210466] [2023-11-29 03:54:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:54:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:54:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:54:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:54:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952210466] [2023-11-29 03:54:26,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952210466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:54:26,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790998587] [2023-11-29 03:54:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:26,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:54:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:54:26,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:54:26,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:54:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:26,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:54:26,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:54:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 03:54:26,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:54:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790998587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:26,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:54:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 03:54:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986142494] [2023-11-29 03:54:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:26,404 INFO L87 Difference]: Start difference. First operand 66296 states and 104320 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:54:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:31,590 INFO L93 Difference]: Finished difference Result 193419 states and 304886 transitions. [2023-11-29 03:54:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:31,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-11-29 03:54:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:31,896 INFO L225 Difference]: With dead ends: 193419 [2023-11-29 03:54:31,896 INFO L226 Difference]: Without dead ends: 129256 [2023-11-29 03:54:31,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:31,984 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4208 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:31,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:54:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129256 states. [2023-11-29 03:54:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129256 to 128860. [2023-11-29 03:54:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128860 states, 115008 states have (on average 1.538840776293823) internal successors, (176979), 116043 states have internal predecessors, (176979), 8396 states have call successors, (8396), 4687 states have call predecessors, (8396), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-11-29 03:54:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128860 states to 128860 states and 201624 transitions. [2023-11-29 03:54:38,187 INFO L78 Accepts]: Start accepts. Automaton has 128860 states and 201624 transitions. Word has length 148 [2023-11-29 03:54:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:54:38,187 INFO L495 AbstractCegarLoop]: Abstraction has 128860 states and 201624 transitions. [2023-11-29 03:54:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:54:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 128860 states and 201624 transitions. [2023-11-29 03:54:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 03:54:38,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:54:38,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:54:38,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:54:38,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:54:38,528 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:54:38,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:54:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1076426963, now seen corresponding path program 1 times [2023-11-29 03:54:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:54:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868644963] [2023-11-29 03:54:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:38,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:54:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:54:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:54:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:54:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:54:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:54:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:54:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:54:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:54:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:54:38,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:54:38,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868644963] [2023-11-29 03:54:38,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868644963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:54:38,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324405397] [2023-11-29 03:54:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:54:38,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:54:38,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:54:38,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:54:38,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:54:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:54:38,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:54:38,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:54:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:54:38,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:54:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324405397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:54:38,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:54:38,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 03:54:38,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350247800] [2023-11-29 03:54:38,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:54:38,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:54:38,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:54:38,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:54:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:38,871 INFO L87 Difference]: Start difference. First operand 128860 states and 201624 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:54:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:54:48,818 INFO L93 Difference]: Finished difference Result 376945 states and 593805 transitions. [2023-11-29 03:54:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:54:48,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 148 [2023-11-29 03:54:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:54:49,720 INFO L225 Difference]: With dead ends: 376945 [2023-11-29 03:54:49,720 INFO L226 Difference]: Without dead ends: 250219 [2023-11-29 03:54:49,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:54:49,888 INFO L413 NwaCegarLoop]: 4474 mSDtfsCounter, 255 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8706 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:54:49,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 8706 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:54:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250219 states. [2023-11-29 03:55:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250219 to 250219. [2023-11-29 03:55:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250219 states, 223120 states have (on average 1.5284286482610254) internal successors, (341023), 224924 states have internal predecessors, (341023), 16225 states have call successors, (16225), 9337 states have call predecessors, (16225), 10872 states have return successors, (35056), 16085 states have call predecessors, (35056), 16223 states have call successors, (35056) [2023-11-29 03:55:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250219 states to 250219 states and 392304 transitions. [2023-11-29 03:55:01,651 INFO L78 Accepts]: Start accepts. Automaton has 250219 states and 392304 transitions. Word has length 148 [2023-11-29 03:55:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:01,651 INFO L495 AbstractCegarLoop]: Abstraction has 250219 states and 392304 transitions. [2023-11-29 03:55:01,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:55:01,651 INFO L276 IsEmpty]: Start isEmpty. Operand 250219 states and 392304 transitions. [2023-11-29 03:55:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 03:55:02,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:02,488 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:02,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:55:02,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:55:02,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:55:02,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash -408636995, now seen corresponding path program 1 times [2023-11-29 03:55:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:02,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472169763] [2023-11-29 03:55:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:02,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:55:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:55:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:55:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:55:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:55:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:55:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:55:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 03:55:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:55:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 03:55:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 03:55:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472169763] [2023-11-29 03:55:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472169763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566554304] [2023-11-29 03:55:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:02,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:02,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:02,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:02,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:55:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:03,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:55:03,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:55:03,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566554304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:03,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 03:55:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368285943] [2023-11-29 03:55:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:03,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:55:03,210 INFO L87 Difference]: Start difference. First operand 250219 states and 392304 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 03:55:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:22,611 INFO L93 Difference]: Finished difference Result 741421 states and 1169629 transitions. [2023-11-29 03:55:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 191 [2023-11-29 03:55:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:24,287 INFO L225 Difference]: With dead ends: 741421 [2023-11-29 03:55:24,287 INFO L226 Difference]: Without dead ends: 493343 [2023-11-29 03:55:24,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:55:24,865 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4145 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:24,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:55:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493343 states. [2023-11-29 03:55:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493343 to 491771. [2023-11-29 03:55:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491771 states, 438528 states have (on average 1.5227830377991827) internal successors, (667783), 442132 states have internal predecessors, (667783), 31569 states have call successors, (31569), 18601 states have call predecessors, (31569), 21672 states have return successors, (68652), 31165 states have call predecessors, (68652), 31567 states have call successors, (68652) [2023-11-29 03:55:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491771 states to 491771 states and 768004 transitions. [2023-11-29 03:55:47,270 INFO L78 Accepts]: Start accepts. Automaton has 491771 states and 768004 transitions. Word has length 191 [2023-11-29 03:55:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:47,271 INFO L495 AbstractCegarLoop]: Abstraction has 491771 states and 768004 transitions. [2023-11-29 03:55:47,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 03:55:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 491771 states and 768004 transitions. [2023-11-29 03:55:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 03:55:48,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:48,542 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:48,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:55:48,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:55:48,743 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:55:48,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2086271592, now seen corresponding path program 1 times [2023-11-29 03:55:48,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:48,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271726823] [2023-11-29 03:55:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:55:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 03:55:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:55:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:55:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:55:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:55:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:55:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 03:55:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 03:55:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 03:55:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 03:55:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271726823] [2023-11-29 03:55:48,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271726823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369792695] [2023-11-29 03:55:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:48,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:48,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:48,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:48,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c6e7d0-bfa1-4350-bd13-f2ed3f91ef38/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:55:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:49,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:55:49,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:55:49,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369792695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:49,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 03:55:49,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423719763] [2023-11-29 03:55:49,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:49,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:49,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:49,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:55:49,191 INFO L87 Difference]: Start difference. First operand 491771 states and 768004 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)