./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/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_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/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_736a240b-9ba0-4faf-8b44-1c40035f0728/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 d82b800c515c04812d9c150cf365a0cfa0ea150fbe8533e2e65b2216ea091fd6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:44:40,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:44:40,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:44:40,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:44:40,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:44:40,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:44:40,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:44:40,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:44:40,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:44:40,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:44:40,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:44:40,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:44:40,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:44:40,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:44:40,218 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:44:40,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:44:40,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:44:40,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:44:40,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:44:40,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:44:40,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:44:40,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:44:40,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:44:40,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:44:40,224 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:44:40,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:44:40,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:44:40,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:44:40,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:44:40,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:44:40,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:44:40,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:44:40,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:44:40,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:44:40,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:44:40,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:44:40,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:44:40,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:44:40,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:44:40,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:44:40,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:44:40,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:44:40,230 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_736a240b-9ba0-4faf-8b44-1c40035f0728/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82b800c515c04812d9c150cf365a0cfa0ea150fbe8533e2e65b2216ea091fd6 [2023-11-28 20:44:40,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:44:40,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:44:40,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:44:40,455 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:44:40,455 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:44:40,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c [2023-11-28 20:44:43,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:44:43,737 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:44:43,738 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c [2023-11-28 20:44:43,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/data/c32f096e0/ff3c357864a94fea8a3822b54d9c525e/FLAG46bc3036d [2023-11-28 20:44:43,790 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/data/c32f096e0/ff3c357864a94fea8a3822b54d9c525e [2023-11-28 20:44:43,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:44:43,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:44:43,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:44:43,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:44:43,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:44:43,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:44:43" (1/1) ... [2023-11-28 20:44:43,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfa51cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:43, skipping insertion in model container [2023-11-28 20:44:43,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:44:43" (1/1) ... [2023-11-28 20:44:44,018 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:44:45,854 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_736a240b-9ba0-4faf-8b44-1c40035f0728/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[377069,377082] [2023-11-28 20:44:45,879 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_736a240b-9ba0-4faf-8b44-1c40035f0728/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[383339,383352] [2023-11-28 20:44:46,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:44:46,121 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:44:47,116 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_736a240b-9ba0-4faf-8b44-1c40035f0728/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[377069,377082] [2023-11-28 20:44:47,122 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_736a240b-9ba0-4faf-8b44-1c40035f0728/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[383339,383352] [2023-11-28 20:44:47,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:44:47,209 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:44:47,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47 WrapperNode [2023-11-28 20:44:47,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:44:47,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:44:47,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:44:47,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:44:47,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:47,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:47,764 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12988 [2023-11-28 20:44:47,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:44:47,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:44:47,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:44:47,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:44:47,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:47,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:47,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:47,962 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]. [2023-11-28 20:44:47,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:47,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:48,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:48,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:48,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:48,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:48,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:44:48,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:44:48,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:44:48,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:44:48,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (1/1) ... [2023-11-28 20:44:48,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:44:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:48,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:44:48,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736a240b-9ba0-4faf-8b44-1c40035f0728/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:44:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:44:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-28 20:44:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-28 20:44:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-28 20:44:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-28 20:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-28 20:44:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-28 20:44:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-28 20:44:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-28 20:44:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-28 20:44:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-28 20:44:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-28 20:44:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-28 20:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:44:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:44:48,575 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:44:48,579 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:44:56,100 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:44:56,211 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:44:56,211 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-28 20:44:56,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:56 BoogieIcfgContainer [2023-11-28 20:44:56,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:44:56,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:44:56,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:44:56,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:44:56,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:44:43" (1/3) ... [2023-11-28 20:44:56,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11088fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:44:56, skipping insertion in model container [2023-11-28 20:44:56,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:47" (2/3) ... [2023-11-28 20:44:56,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11088fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:44:56, skipping insertion in model container [2023-11-28 20:44:56,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:56" (3/3) ... [2023-11-28 20:44:56,222 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.08.cil-1.c [2023-11-28 20:44:56,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:44:56,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-28 20:44:56,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:44:56,350 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;@41672bf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:44:56,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-28 20:44:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-28 20:44:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:44:56,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:56,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:56,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:56,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:56,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2060137260, now seen corresponding path program 1 times [2023-11-28 20:44:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:56,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160337268] [2023-11-28 20:44:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:56,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:44:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:44:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:44:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:44:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:44:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:56,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:56,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160337268] [2023-11-28 20:44:56,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160337268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:56,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:56,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:44:56,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383020572] [2023-11-28 20:44:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:44:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:44:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:44:56,908 INFO L87 Difference]: Start difference. First operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:44:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:44:58,565 INFO L93 Difference]: Finished difference Result 4844 states and 9066 transitions. [2023-11-28 20:44:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:44:58,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:44:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:44:58,599 INFO L225 Difference]: With dead ends: 4844 [2023-11-28 20:44:58,599 INFO L226 Difference]: Without dead ends: 2465 [2023-11-28 20:44:58,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:44:58,612 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 695 mSDsluCounter, 12116 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 16297 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:44:58,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 16297 Invalid, 806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 20:44:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-11-28 20:44:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2375. [2023-11-28 20:44:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2345 states have (on average 1.8426439232409382) internal successors, (4321), 2347 states have internal predecessors, (4321), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-28 20:44:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4365 transitions. [2023-11-28 20:44:58,758 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4365 transitions. Word has length 121 [2023-11-28 20:44:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:44:58,758 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 4365 transitions. [2023-11-28 20:44:58,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:44:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4365 transitions. [2023-11-28 20:44:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:44:58,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:58,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:44:58,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:58,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 58250990, now seen corresponding path program 1 times [2023-11-28 20:44:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139429235] [2023-11-28 20:44:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:44:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:44:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:44:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:59,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:44:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:44:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139429235] [2023-11-28 20:44:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139429235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:44:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666790070] [2023-11-28 20:44:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:59,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:44:59,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:59,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:44:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:44:59,085 INFO L87 Difference]: Start difference. First operand 2375 states and 4365 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:01,657 INFO L93 Difference]: Finished difference Result 3046 states and 5475 transitions. [2023-11-28 20:45:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:45:01,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:01,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:01,679 INFO L225 Difference]: With dead ends: 3046 [2023-11-28 20:45:01,679 INFO L226 Difference]: Without dead ends: 2806 [2023-11-28 20:45:01,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:45:01,684 INFO L413 NwaCegarLoop]: 4154 mSDtfsCounter, 4998 mSDsluCounter, 12445 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 16599 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:01,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5013 Valid, 16599 Invalid, 1714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-28 20:45:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2023-11-28 20:45:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2627. [2023-11-28 20:45:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2573 states have (on average 1.8239409249902838) internal successors, (4693), 2576 states have internal predecessors, (4693), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-11-28 20:45:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4774 transitions. [2023-11-28 20:45:01,810 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4774 transitions. Word has length 121 [2023-11-28 20:45:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:01,811 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 4774 transitions. [2023-11-28 20:45:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4774 transitions. [2023-11-28 20:45:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:01,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:01,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:45:01,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:01,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 603539502, now seen corresponding path program 1 times [2023-11-28 20:45:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:01,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856865696] [2023-11-28 20:45:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856865696] [2023-11-28 20:45:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856865696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:02,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:02,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996287651] [2023-11-28 20:45:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:02,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:02,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:02,174 INFO L87 Difference]: Start difference. First operand 2627 states and 4774 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:05,077 INFO L93 Difference]: Finished difference Result 3651 states and 6465 transitions. [2023-11-28 20:45:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:45:05,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:05,093 INFO L225 Difference]: With dead ends: 3651 [2023-11-28 20:45:05,093 INFO L226 Difference]: Without dead ends: 3159 [2023-11-28 20:45:05,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:45:05,097 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 5019 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:05,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 21241 Invalid, 2691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-28 20:45:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2023-11-28 20:45:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2860. [2023-11-28 20:45:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2782 states have (on average 1.8069734004313445) internal successors, (5027), 2786 states have internal predecessors, (5027), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-11-28 20:45:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 5144 transitions. [2023-11-28 20:45:05,177 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 5144 transitions. Word has length 121 [2023-11-28 20:45:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:05,177 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 5144 transitions. [2023-11-28 20:45:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 5144 transitions. [2023-11-28 20:45:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:05,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:05,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:45:05,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:05,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1429854544, now seen corresponding path program 1 times [2023-11-28 20:45:05,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207589130] [2023-11-28 20:45:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:05,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:05,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:05,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207589130] [2023-11-28 20:45:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207589130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:05,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118513518] [2023-11-28 20:45:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:05,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:05,410 INFO L87 Difference]: Start difference. First operand 2860 states and 5144 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:07,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:07,889 INFO L93 Difference]: Finished difference Result 4537 states and 7907 transitions. [2023-11-28 20:45:07,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:45:07,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:07,910 INFO L225 Difference]: With dead ends: 4537 [2023-11-28 20:45:07,910 INFO L226 Difference]: Without dead ends: 3812 [2023-11-28 20:45:07,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:45:07,915 INFO L413 NwaCegarLoop]: 4163 mSDtfsCounter, 5097 mSDsluCounter, 16578 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5112 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:07,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5112 Valid, 20741 Invalid, 2271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-28 20:45:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2023-11-28 20:45:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3327. [2023-11-28 20:45:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7794439237738207) internal successors, (5696), 3207 states have internal predecessors, (5696), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-28 20:45:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5889 transitions. [2023-11-28 20:45:08,065 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5889 transitions. Word has length 121 [2023-11-28 20:45:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:08,065 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5889 transitions. [2023-11-28 20:45:08,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5889 transitions. [2023-11-28 20:45:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:08,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:08,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:45:08,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:08,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash 998404078, now seen corresponding path program 1 times [2023-11-28 20:45:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218384062] [2023-11-28 20:45:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218384062] [2023-11-28 20:45:08,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218384062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:08,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:08,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:08,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685763637] [2023-11-28 20:45:08,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:08,290 INFO L87 Difference]: Start difference. First operand 3327 states and 5889 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:09,537 INFO L93 Difference]: Finished difference Result 4994 states and 8645 transitions. [2023-11-28 20:45:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:45:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:09,560 INFO L225 Difference]: With dead ends: 4994 [2023-11-28 20:45:09,560 INFO L226 Difference]: Without dead ends: 3802 [2023-11-28 20:45:09,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:45:09,566 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4837 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:09,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 16453 Invalid, 1285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:45:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2023-11-28 20:45:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3327. [2023-11-28 20:45:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7778819119025304) internal successors, (5691), 3207 states have internal predecessors, (5691), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-28 20:45:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5884 transitions. [2023-11-28 20:45:09,698 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5884 transitions. Word has length 121 [2023-11-28 20:45:09,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:09,699 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5884 transitions. [2023-11-28 20:45:09,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5884 transitions. [2023-11-28 20:45:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:09,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:09,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:09,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:45:09,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:09,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -308738320, now seen corresponding path program 1 times [2023-11-28 20:45:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631982726] [2023-11-28 20:45:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:09,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631982726] [2023-11-28 20:45:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631982726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186594493] [2023-11-28 20:45:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:09,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:09,930 INFO L87 Difference]: Start difference. First operand 3327 states and 5884 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:11,193 INFO L93 Difference]: Finished difference Result 4983 states and 8609 transitions. [2023-11-28 20:45:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:45:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:11,209 INFO L225 Difference]: With dead ends: 4983 [2023-11-28 20:45:11,210 INFO L226 Difference]: Without dead ends: 3791 [2023-11-28 20:45:11,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:45:11,214 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4833 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:11,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4849 Valid, 16453 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:45:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2023-11-28 20:45:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3327. [2023-11-28 20:45:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7763199000312402) internal successors, (5686), 3207 states have internal predecessors, (5686), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-28 20:45:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5879 transitions. [2023-11-28 20:45:11,374 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5879 transitions. Word has length 121 [2023-11-28 20:45:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:11,374 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5879 transitions. [2023-11-28 20:45:11,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5879 transitions. [2023-11-28 20:45:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:11,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:11,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:11,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:45:11,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:11,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash 722302578, now seen corresponding path program 1 times [2023-11-28 20:45:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787670541] [2023-11-28 20:45:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:11,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787670541] [2023-11-28 20:45:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787670541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588625928] [2023-11-28 20:45:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:11,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:11,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:11,612 INFO L87 Difference]: Start difference. First operand 3327 states and 5879 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:14,266 INFO L93 Difference]: Finished difference Result 6219 states and 10582 transitions. [2023-11-28 20:45:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:45:14,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:14,291 INFO L225 Difference]: With dead ends: 6219 [2023-11-28 20:45:14,292 INFO L226 Difference]: Without dead ends: 5027 [2023-11-28 20:45:14,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:45:14,298 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 5002 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:14,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21239 Invalid, 2614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-28 20:45:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2023-11-28 20:45:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4276. [2023-11-28 20:45:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.735816477553034) internal successors, (7037), 4064 states have internal predecessors, (7037), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-11-28 20:45:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7388 transitions. [2023-11-28 20:45:14,482 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7388 transitions. Word has length 121 [2023-11-28 20:45:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:14,483 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 7388 transitions. [2023-11-28 20:45:14,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7388 transitions. [2023-11-28 20:45:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:14,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:14,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:45:14,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:14,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1184100688, now seen corresponding path program 1 times [2023-11-28 20:45:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223728503] [2023-11-28 20:45:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:14,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:14,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223728503] [2023-11-28 20:45:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223728503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:14,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470268460] [2023-11-28 20:45:14,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:14,776 INFO L87 Difference]: Start difference. First operand 4276 states and 7388 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:16,300 INFO L93 Difference]: Finished difference Result 7177 states and 12134 transitions. [2023-11-28 20:45:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:45:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:16,320 INFO L225 Difference]: With dead ends: 7177 [2023-11-28 20:45:16,320 INFO L226 Difference]: Without dead ends: 5036 [2023-11-28 20:45:16,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:45:16,328 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4724 mSDsluCounter, 16388 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 20529 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:16,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 20529 Invalid, 1348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-28 20:45:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2023-11-28 20:45:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4276. [2023-11-28 20:45:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.7335964479526393) internal successors, (7028), 4064 states have internal predecessors, (7028), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-11-28 20:45:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7379 transitions. [2023-11-28 20:45:16,510 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7379 transitions. Word has length 121 [2023-11-28 20:45:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:16,511 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 7379 transitions. [2023-11-28 20:45:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7379 transitions. [2023-11-28 20:45:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:16,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:16,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:45:16,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:16,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash 416970418, now seen corresponding path program 1 times [2023-11-28 20:45:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140695319] [2023-11-28 20:45:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:16,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:16,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:16,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140695319] [2023-11-28 20:45:16,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140695319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:16,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:16,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:16,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197647274] [2023-11-28 20:45:16,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:16,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:16,735 INFO L87 Difference]: Start difference. First operand 4276 states and 7379 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:19,350 INFO L93 Difference]: Finished difference Result 9610 states and 16003 transitions. [2023-11-28 20:45:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:45:19,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:19,374 INFO L225 Difference]: With dead ends: 9610 [2023-11-28 20:45:19,374 INFO L226 Difference]: Without dead ends: 7469 [2023-11-28 20:45:19,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:45:19,383 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 4994 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5009 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:19,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5009 Valid, 21239 Invalid, 2576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-28 20:45:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2023-11-28 20:45:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 6184. [2023-11-28 20:45:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 5770 states have (on average 1.6863084922010398) internal successors, (9730), 5788 states have internal predecessors, (9730), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-11-28 20:45:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 10415 transitions. [2023-11-28 20:45:19,660 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 10415 transitions. Word has length 121 [2023-11-28 20:45:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:19,661 INFO L495 AbstractCegarLoop]: Abstraction has 6184 states and 10415 transitions. [2023-11-28 20:45:19,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 10415 transitions. [2023-11-28 20:45:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:19,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:19,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:19,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:45:19,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:19,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash -639760784, now seen corresponding path program 1 times [2023-11-28 20:45:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265499277] [2023-11-28 20:45:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:19,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:19,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265499277] [2023-11-28 20:45:19,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265499277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:19,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:19,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853853043] [2023-11-28 20:45:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:19,894 INFO L87 Difference]: Start difference. First operand 6184 states and 10415 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:23,026 INFO L93 Difference]: Finished difference Result 18072 states and 29651 transitions. [2023-11-28 20:45:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:45:23,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:23,057 INFO L225 Difference]: With dead ends: 18072 [2023-11-28 20:45:23,057 INFO L226 Difference]: Without dead ends: 14023 [2023-11-28 20:45:23,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:45:23,070 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5287 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5311 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:23,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5311 Valid, 21232 Invalid, 2556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 20:45:23,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2023-11-28 20:45:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 9981. [2023-11-28 20:45:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9199 states have (on average 1.6453962387216001) internal successors, (15136), 9233 states have internal predecessors, (15136), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-11-28 20:45:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 16511 transitions. [2023-11-28 20:45:23,440 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 16511 transitions. Word has length 121 [2023-11-28 20:45:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:23,440 INFO L495 AbstractCegarLoop]: Abstraction has 9981 states and 16511 transitions. [2023-11-28 20:45:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 16511 transitions. [2023-11-28 20:45:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:23,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:23,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:23,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:45:23,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:23,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:23,448 INFO L85 PathProgramCache]: Analyzing trace with hash 711624434, now seen corresponding path program 1 times [2023-11-28 20:45:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316926136] [2023-11-28 20:45:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:23,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316926136] [2023-11-28 20:45:23,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316926136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:23,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:23,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451186268] [2023-11-28 20:45:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:23,631 INFO L87 Difference]: Start difference. First operand 9981 states and 16511 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:27,162 INFO L93 Difference]: Finished difference Result 32883 states and 53741 transitions. [2023-11-28 20:45:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:45:27,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:27,298 INFO L225 Difference]: With dead ends: 32883 [2023-11-28 20:45:27,298 INFO L226 Difference]: Without dead ends: 25037 [2023-11-28 20:45:27,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:45:27,324 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 5120 mSDsluCounter, 16600 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5134 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:27,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5134 Valid, 20789 Invalid, 2715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-28 20:45:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25037 states. [2023-11-28 20:45:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25037 to 17414. [2023-11-28 20:45:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17414 states, 15912 states have (on average 1.6165158371040724) internal successors, (25722), 15978 states have internal predecessors, (25722), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-11-28 20:45:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17414 states to 17414 states and 28607 transitions. [2023-11-28 20:45:28,150 INFO L78 Accepts]: Start accepts. Automaton has 17414 states and 28607 transitions. Word has length 121 [2023-11-28 20:45:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:28,150 INFO L495 AbstractCegarLoop]: Abstraction has 17414 states and 28607 transitions. [2023-11-28 20:45:28,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 17414 states and 28607 transitions. [2023-11-28 20:45:28,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:28,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:28,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:28,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:45:28,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:28,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash -907350480, now seen corresponding path program 1 times [2023-11-28 20:45:28,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:28,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796591660] [2023-11-28 20:45:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:28,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:28,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796591660] [2023-11-28 20:45:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796591660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688037086] [2023-11-28 20:45:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:28,339 INFO L87 Difference]: Start difference. First operand 17414 states and 28607 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:32,209 INFO L93 Difference]: Finished difference Result 61578 states and 100971 transitions. [2023-11-28 20:45:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:45:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:32,353 INFO L225 Difference]: With dead ends: 61578 [2023-11-28 20:45:32,354 INFO L226 Difference]: Without dead ends: 46299 [2023-11-28 20:45:32,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:45:32,411 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5221 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5245 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:32,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5245 Valid, 21232 Invalid, 2525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 20:45:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46299 states. [2023-11-28 20:45:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46299 to 32439. [2023-11-28 20:45:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32439 states, 29529 states have (on average 1.598835043516543) internal successors, (47212), 29659 states have internal predecessors, (47212), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-11-28 20:45:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32439 states to 32439 states and 53539 transitions. [2023-11-28 20:45:34,405 INFO L78 Accepts]: Start accepts. Automaton has 32439 states and 53539 transitions. Word has length 121 [2023-11-28 20:45:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:34,406 INFO L495 AbstractCegarLoop]: Abstraction has 32439 states and 53539 transitions. [2023-11-28 20:45:34,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 32439 states and 53539 transitions. [2023-11-28 20:45:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:34,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:34,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:45:34,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:34,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1790859470, now seen corresponding path program 1 times [2023-11-28 20:45:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:34,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798811954] [2023-11-28 20:45:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:34,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:34,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798811954] [2023-11-28 20:45:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798811954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:34,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915625458] [2023-11-28 20:45:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:34,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:34,643 INFO L87 Difference]: Start difference. First operand 32439 states and 53539 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:39,635 INFO L93 Difference]: Finished difference Result 116759 states and 193853 transitions. [2023-11-28 20:45:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:45:39,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:39,840 INFO L225 Difference]: With dead ends: 116759 [2023-11-28 20:45:39,840 INFO L226 Difference]: Without dead ends: 86455 [2023-11-28 20:45:39,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:45:39,898 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5030 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:39,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5044 Valid, 21232 Invalid, 2812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2755 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-28 20:45:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86455 states. [2023-11-28 20:45:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86455 to 62617. [2023-11-28 20:45:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62617 states, 56955 states have (on average 1.5903081380036872) internal successors, (90576), 57213 states have internal predecessors, (90576), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-11-28 20:45:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62617 states to 62617 states and 105117 transitions. [2023-11-28 20:45:43,209 INFO L78 Accepts]: Start accepts. Automaton has 62617 states and 105117 transitions. Word has length 121 [2023-11-28 20:45:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:43,209 INFO L495 AbstractCegarLoop]: Abstraction has 62617 states and 105117 transitions. [2023-11-28 20:45:43,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 62617 states and 105117 transitions. [2023-11-28 20:45:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:43,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:43,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:43,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 20:45:43,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:43,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash 563525812, now seen corresponding path program 1 times [2023-11-28 20:45:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427194662] [2023-11-28 20:45:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427194662] [2023-11-28 20:45:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427194662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:43,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:43,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:43,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951611583] [2023-11-28 20:45:43,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:43,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:43,464 INFO L87 Difference]: Start difference. First operand 62617 states and 105117 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:45:50,938 INFO L93 Difference]: Finished difference Result 226999 states and 384949 transitions. [2023-11-28 20:45:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:45:50,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:45:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:45:51,413 INFO L225 Difference]: With dead ends: 226999 [2023-11-28 20:45:51,413 INFO L226 Difference]: Without dead ends: 166517 [2023-11-28 20:45:51,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:45:51,553 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5110 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5134 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:45:51,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5134 Valid, 21232 Invalid, 2485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 20:45:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166517 states. [2023-11-28 20:45:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166517 to 122970. [2023-11-28 20:45:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122970 states, 111932 states have (on average 1.586266661901869) internal successors, (177554), 112446 states have internal predecessors, (177554), 7446 states have call successors, (7446), 3078 states have call predecessors, (7446), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-11-28 20:45:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122970 states to 122970 states and 212641 transitions. [2023-11-28 20:45:57,868 INFO L78 Accepts]: Start accepts. Automaton has 122970 states and 212641 transitions. Word has length 121 [2023-11-28 20:45:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:45:57,868 INFO L495 AbstractCegarLoop]: Abstraction has 122970 states and 212641 transitions. [2023-11-28 20:45:57,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:45:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 122970 states and 212641 transitions. [2023-11-28 20:45:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:45:57,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:45:57,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:45:57,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 20:45:57,935 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:45:57,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:45:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1854378254, now seen corresponding path program 1 times [2023-11-28 20:45:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:45:57,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681179737] [2023-11-28 20:45:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:45:57,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:45:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:45:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:45:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:58,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:45:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:45:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:45:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:45:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:45:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:45:58,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681179737] [2023-11-28 20:45:58,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681179737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:45:58,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:45:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:45:58,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210682325] [2023-11-28 20:45:58,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:45:58,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:45:58,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:45:58,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:45:58,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:45:58,145 INFO L87 Difference]: Start difference. First operand 122970 states and 212641 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:46:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:10,673 INFO L93 Difference]: Finished difference Result 443638 states and 777979 transitions. [2023-11-28 20:46:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:46:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:46:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:11,955 INFO L225 Difference]: With dead ends: 443638 [2023-11-28 20:46:11,955 INFO L226 Difference]: Without dead ends: 322803 [2023-11-28 20:46:12,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:46:12,280 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5010 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5024 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:12,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5024 Valid, 21232 Invalid, 2694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 20:46:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322803 states. [2023-11-28 20:46:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322803 to 243675. [2023-11-28 20:46:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243675 states, 222141 states have (on average 1.5846691965913542) internal successors, (352020), 223167 states have internal predecessors, (352020), 14358 states have call successors, (14358), 6150 states have call predecessors, (14358), 7174 states have return successors, (74431), 15381 states have call predecessors, (74431), 14358 states have call successors, (74431) [2023-11-28 20:46:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243675 states to 243675 states and 440809 transitions. [2023-11-28 20:46:25,890 INFO L78 Accepts]: Start accepts. Automaton has 243675 states and 440809 transitions. Word has length 121 [2023-11-28 20:46:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:25,890 INFO L495 AbstractCegarLoop]: Abstraction has 243675 states and 440809 transitions. [2023-11-28 20:46:25,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:46:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 243675 states and 440809 transitions. [2023-11-28 20:46:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:46:25,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:46:25,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 20:46:25,983 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:46:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:46:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1669855476, now seen corresponding path program 1 times [2023-11-28 20:46:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:46:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214660462] [2023-11-28 20:46:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:46:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:46:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:46:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:46:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:46:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:46:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:46:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214660462] [2023-11-28 20:46:26,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214660462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:46:26,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:46:26,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:46:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649307363] [2023-11-28 20:46:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:46:26,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:46:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:46:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:46:26,208 INFO L87 Difference]: Start difference. First operand 243675 states and 440809 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:46:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:47,848 INFO L93 Difference]: Finished difference Result 869237 states and 1603217 transitions. [2023-11-28 20:46:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:46:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:46:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:50,725 INFO L225 Difference]: With dead ends: 869237 [2023-11-28 20:46:50,726 INFO L226 Difference]: Without dead ends: 627697 [2023-11-28 20:46:51,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:46:51,494 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5038 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5062 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:51,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5062 Valid, 21232 Invalid, 2459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 20:46:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627697 states. [2023-11-28 20:47:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627697 to 485084. [2023-11-28 20:47:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485084 states, 443070 states have (on average 1.5843410747737379) internal successors, (701974), 445120 states have internal predecessors, (701974), 27670 states have call successors, (27670), 12294 states have call predecessors, (27670), 14342 states have return successors, (206865), 29717 states have call predecessors, (206865), 27670 states have call successors, (206865) [2023-11-28 20:47:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485084 states to 485084 states and 936509 transitions. [2023-11-28 20:47:19,494 INFO L78 Accepts]: Start accepts. Automaton has 485084 states and 936509 transitions. Word has length 121 [2023-11-28 20:47:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:47:19,494 INFO L495 AbstractCegarLoop]: Abstraction has 485084 states and 936509 transitions. [2023-11-28 20:47:19,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:47:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 485084 states and 936509 transitions. [2023-11-28 20:47:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:47:19,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:47:19,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:47:19,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:47:19,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:47:19,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:47:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash 675161778, now seen corresponding path program 1 times [2023-11-28 20:47:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:47:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363535677] [2023-11-28 20:47:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:47:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:47:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 20:47:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-28 20:47:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 20:47:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 20:47:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-28 20:47:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:47:19,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:47:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363535677] [2023-11-28 20:47:19,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363535677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:47:19,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:47:19,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:47:19,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262987149] [2023-11-28 20:47:19,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:47:19,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:47:19,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:47:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:47:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:47:19,983 INFO L87 Difference]: Start difference. First operand 485084 states and 936509 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:48:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:48:01,321 INFO L93 Difference]: Finished difference Result 1705076 states and 3384535 transitions. [2023-11-28 20:48:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:48:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-11-28 20:48:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted.