./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/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 211a040b667c92c6d715ed7462c0db91088ae0b583b29f60ca2f33cb3ca9ce8b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:14:16,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:14:16,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:14:16,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:14:16,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:14:16,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:14:16,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:14:16,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:14:16,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:14:16,408 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:14:16,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:14:16,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:14:16,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:14:16,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:14:16,411 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:14:16,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:14:16,412 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:14:16,413 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:14:16,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:14:16,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:14:16,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:14:16,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:14:16,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:14:16,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:14:16,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:14:16,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:14:16,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:14:16,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:14:16,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:14:16,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:14:16,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:14:16,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:14:16,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:14:16,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:14:16,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:14:16,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:14:16,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:14:16,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:14:16,436 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:14:16,437 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:14:16,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:14:16,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:14:16,438 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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211a040b667c92c6d715ed7462c0db91088ae0b583b29f60ca2f33cb3ca9ce8b [2023-11-29 04:14:16,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:14:16,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:14:16,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:14:16,722 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:14:16,722 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:14:16,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c [2023-11-29 04:14:19,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:14:20,498 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:14:20,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c [2023-11-29 04:14:20,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/data/5e1698a84/ad88845086154d0cae5eb46c5990411b/FLAG75bc112e9 [2023-11-29 04:14:20,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/data/5e1698a84/ad88845086154d0cae5eb46c5990411b [2023-11-29 04:14:20,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:14:20,578 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:14:20,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:14:20,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:14:20,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:14:20,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:14:20" (1/1) ... [2023-11-29 04:14:20,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9660bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:20, skipping insertion in model container [2023-11-29 04:14:20,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:14:20" (1/1) ... [2023-11-29 04:14:20,883 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:14:22,916 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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[380593,380606] [2023-11-29 04:14:22,949 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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[383339,383352] [2023-11-29 04:14:23,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:14:23,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:14:24,167 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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[380593,380606] [2023-11-29 04:14:24,172 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_0795ef09-ab05-4d3e-b03c-d7b40a46c155/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[383339,383352] [2023-11-29 04:14:24,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:14:24,267 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:14:24,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24 WrapperNode [2023-11-29 04:14:24,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:14:24,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:14:24,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:14:24,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:14:24,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:24,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:24,648 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12808 [2023-11-29 04:14:24,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:14:24,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:14:24,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:14:24,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:14:24,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:24,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:24,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:24,880 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:14:24,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:24,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:25,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:25,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:25,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:25,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:25,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:14:25,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:14:25,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:14:25,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:14:25,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (1/1) ... [2023-11-29 04:14:25,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:14:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:25,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:14:25,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:14:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:14:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 04:14:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 04:14:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 04:14:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 04:14:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 04:14:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 04:14:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 04:14:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 04:14:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 04:14:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 04:14:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 04:14:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 04:14:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:14:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:14:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:14:25,560 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:14:25,563 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:14:34,617 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:14:34,739 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:14:34,739 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-29 04:14:34,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:14:34 BoogieIcfgContainer [2023-11-29 04:14:34,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:14:34,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:14:34,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:14:34,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:14:34,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:14:20" (1/3) ... [2023-11-29 04:14:34,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb97562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:14:34, skipping insertion in model container [2023-11-29 04:14:34,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:24" (2/3) ... [2023-11-29 04:14:34,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb97562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:14:34, skipping insertion in model container [2023-11-29 04:14:34,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:14:34" (3/3) ... [2023-11-29 04:14:34,752 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-1.c [2023-11-29 04:14:34,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:14:34,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:14:34,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:14:34,899 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;@5c7ff10b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:14:34,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:14:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 04:14:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:34,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:34,928 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] [2023-11-29 04:14:34,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:34,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1457270218, now seen corresponding path program 1 times [2023-11-29 04:14:34,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943089030] [2023-11-29 04:14:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:34,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:35,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:35,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943089030] [2023-11-29 04:14:35,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943089030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:35,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:35,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:14:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692826356] [2023-11-29 04:14:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:14:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:14:35,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:14:35,468 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:36,901 INFO L93 Difference]: Finished difference Result 4674 states and 8762 transitions. [2023-11-29 04:14:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:14:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:36,934 INFO L225 Difference]: With dead ends: 4674 [2023-11-29 04:14:36,935 INFO L226 Difference]: Without dead ends: 2366 [2023-11-29 04:14:36,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:14:36,949 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 480 mSDsluCounter, 12050 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 16174 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:36,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 16174 Invalid, 566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:14:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2023-11-29 04:14:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2306. [2023-11-29 04:14:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 04:14:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2023-11-29 04:14:37,174 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2023-11-29 04:14:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:37,175 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2023-11-29 04:14:37,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2023-11-29 04:14:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:37,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:37,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:37,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:14:37,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1270939128, now seen corresponding path program 1 times [2023-11-29 04:14:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320129754] [2023-11-29 04:14:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:37,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320129754] [2023-11-29 04:14:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320129754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:37,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:37,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:14:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621557926] [2023-11-29 04:14:37,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:37,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:14:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:37,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:14:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:14:37,454 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:39,182 INFO L93 Difference]: Finished difference Result 2779 states and 5016 transitions. [2023-11-29 04:14:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:14:39,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:39,206 INFO L225 Difference]: With dead ends: 2779 [2023-11-29 04:14:39,206 INFO L226 Difference]: Without dead ends: 2605 [2023-11-29 04:14:39,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:14:39,211 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 4671 mSDsluCounter, 12286 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:39,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16389 Invalid, 1195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:14:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-11-29 04:14:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2486. [2023-11-29 04:14:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-29 04:14:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4534 transitions. [2023-11-29 04:14:39,327 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4534 transitions. Word has length 91 [2023-11-29 04:14:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4534 transitions. [2023-11-29 04:14:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4534 transitions. [2023-11-29 04:14:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:39,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:39,331 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] [2023-11-29 04:14:39,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:14:39,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:39,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1610759172, now seen corresponding path program 1 times [2023-11-29 04:14:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580756016] [2023-11-29 04:14:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:39,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:39,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:39,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580756016] [2023-11-29 04:14:39,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580756016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:39,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64656605] [2023-11-29 04:14:39,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:39,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:39,587 INFO L87 Difference]: Start difference. First operand 2486 states and 4534 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:41,984 INFO L93 Difference]: Finished difference Result 3204 states and 5694 transitions. [2023-11-29 04:14:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:14:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:42,008 INFO L225 Difference]: With dead ends: 3204 [2023-11-29 04:14:42,008 INFO L226 Difference]: Without dead ends: 2850 [2023-11-29 04:14:42,011 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 [2023-11-29 04:14:42,012 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4688 mSDsluCounter, 16626 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:42,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 20836 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:14:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-29 04:14:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-11-29 04:14:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8165634674922602) internal successors, (4694), 2588 states have internal predecessors, (4694), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 04:14:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4793 transitions. [2023-11-29 04:14:42,128 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4793 transitions. Word has length 91 [2023-11-29 04:14:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:42,128 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4793 transitions. [2023-11-29 04:14:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4793 transitions. [2023-11-29 04:14:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:42,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:42,131 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] [2023-11-29 04:14:42,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:14:42,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:42,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash 606871226, now seen corresponding path program 1 times [2023-11-29 04:14:42,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:42,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786943009] [2023-11-29 04:14:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:42,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:42,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786943009] [2023-11-29 04:14:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786943009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:42,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496227268] [2023-11-29 04:14:42,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:42,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:42,338 INFO L87 Difference]: Start difference. First operand 2653 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:43,301 INFO L93 Difference]: Finished difference Result 3375 states and 5967 transitions. [2023-11-29 04:14:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:14:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:43,319 INFO L225 Difference]: With dead ends: 3375 [2023-11-29 04:14:43,320 INFO L226 Difference]: Without dead ends: 2854 [2023-11-29 04:14:43,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:14:43,324 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4567 mSDsluCounter, 12183 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 16273 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:43,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 16273 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:14:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-11-29 04:14:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2653. [2023-11-29 04:14:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8154024767801857) internal successors, (4691), 2588 states have internal predecessors, (4691), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 04:14:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4790 transitions. [2023-11-29 04:14:43,407 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4790 transitions. Word has length 91 [2023-11-29 04:14:43,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:43,407 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4790 transitions. [2023-11-29 04:14:43,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4790 transitions. [2023-11-29 04:14:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:43,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:43,410 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] [2023-11-29 04:14:43,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:14:43,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:43,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1494094072, now seen corresponding path program 1 times [2023-11-29 04:14:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142951985] [2023-11-29 04:14:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:43,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:43,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142951985] [2023-11-29 04:14:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142951985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:43,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:43,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123140366] [2023-11-29 04:14:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:43,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:43,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:43,579 INFO L87 Difference]: Start difference. First operand 2653 states and 4790 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:44,836 INFO L93 Difference]: Finished difference Result 3371 states and 5950 transitions. [2023-11-29 04:14:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:14:44,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:44,850 INFO L225 Difference]: With dead ends: 3371 [2023-11-29 04:14:44,851 INFO L226 Difference]: Without dead ends: 2850 [2023-11-29 04:14:44,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:14:44,854 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4490 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:44,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20316 Invalid, 955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:14:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-29 04:14:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-11-29 04:14:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8142414860681115) internal successors, (4688), 2588 states have internal predecessors, (4688), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 04:14:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4787 transitions. [2023-11-29 04:14:44,937 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4787 transitions. Word has length 91 [2023-11-29 04:14:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:44,938 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4787 transitions. [2023-11-29 04:14:44,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4787 transitions. [2023-11-29 04:14:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:44,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:44,940 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] [2023-11-29 04:14:44,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:14:44,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:44,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:44,941 INFO L85 PathProgramCache]: Analyzing trace with hash -416948486, now seen corresponding path program 1 times [2023-11-29 04:14:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:44,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592070396] [2023-11-29 04:14:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:44,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:45,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:45,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592070396] [2023-11-29 04:14:45,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592070396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:45,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:45,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:45,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898920952] [2023-11-29 04:14:45,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:45,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:45,103 INFO L87 Difference]: Start difference. First operand 2653 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:46,144 INFO L93 Difference]: Finished difference Result 3367 states and 5933 transitions. [2023-11-29 04:14:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:14:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:46,161 INFO L225 Difference]: With dead ends: 3367 [2023-11-29 04:14:46,162 INFO L226 Difference]: Without dead ends: 2846 [2023-11-29 04:14:46,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:14:46,166 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4488 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:46,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 20316 Invalid, 939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:14:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-11-29 04:14:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2653. [2023-11-29 04:14:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.813080495356037) internal successors, (4685), 2588 states have internal predecessors, (4685), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-29 04:14:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4784 transitions. [2023-11-29 04:14:46,264 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4784 transitions. Word has length 91 [2023-11-29 04:14:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:46,265 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4784 transitions. [2023-11-29 04:14:46,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4784 transitions. [2023-11-29 04:14:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:46,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:46,267 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] [2023-11-29 04:14:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:14:46,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:46,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash -340047688, now seen corresponding path program 1 times [2023-11-29 04:14:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529218362] [2023-11-29 04:14:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529218362] [2023-11-29 04:14:46,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529218362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:46,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747163006] [2023-11-29 04:14:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:46,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:46,459 INFO L87 Difference]: Start difference. First operand 2653 states and 4784 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:48,478 INFO L93 Difference]: Finished difference Result 3949 states and 6833 transitions. [2023-11-29 04:14:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:14:48,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:48,503 INFO L225 Difference]: With dead ends: 3949 [2023-11-29 04:14:48,504 INFO L226 Difference]: Without dead ends: 3428 [2023-11-29 04:14:48,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:14:48,510 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4898 mSDsluCounter, 16369 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 20483 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:48,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 20483 Invalid, 1522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:14:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2023-11-29 04:14:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2996. [2023-11-29 04:14:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2887 states have (on average 1.7852441981295462) internal successors, (5154), 2893 states have internal predecessors, (5154), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-11-29 04:14:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 5313 transitions. [2023-11-29 04:14:48,679 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 5313 transitions. Word has length 91 [2023-11-29 04:14:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:48,679 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 5313 transitions. [2023-11-29 04:14:48,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 5313 transitions. [2023-11-29 04:14:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:48,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:48,684 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] [2023-11-29 04:14:48,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:14:48,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:48,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1307398342, now seen corresponding path program 1 times [2023-11-29 04:14:48,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:48,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235251888] [2023-11-29 04:14:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:48,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:48,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:48,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235251888] [2023-11-29 04:14:48,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235251888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:48,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:48,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:48,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200999281] [2023-11-29 04:14:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:48,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:48,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:48,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:48,921 INFO L87 Difference]: Start difference. First operand 2996 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:51,171 INFO L93 Difference]: Finished difference Result 5232 states and 8832 transitions. [2023-11-29 04:14:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:14:51,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:51,197 INFO L225 Difference]: With dead ends: 5232 [2023-11-29 04:14:51,197 INFO L226 Difference]: Without dead ends: 4368 [2023-11-29 04:14:51,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:14:51,204 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 4697 mSDsluCounter, 16618 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 20823 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:51,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 20823 Invalid, 2038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:14:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2023-11-29 04:14:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 3653. [2023-11-29 04:14:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3466 states have (on average 1.7443739180611657) internal successors, (6046), 3476 states have internal predecessors, (6046), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-11-29 04:14:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 6327 transitions. [2023-11-29 04:14:51,390 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 6327 transitions. Word has length 91 [2023-11-29 04:14:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:51,391 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 6327 transitions. [2023-11-29 04:14:51,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 6327 transitions. [2023-11-29 04:14:51,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:51,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:51,395 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] [2023-11-29 04:14:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:14:51,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:51,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash 601059448, now seen corresponding path program 1 times [2023-11-29 04:14:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164085946] [2023-11-29 04:14:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:51,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:51,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164085946] [2023-11-29 04:14:51,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164085946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:51,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129041181] [2023-11-29 04:14:51,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:51,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:51,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:51,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:51,592 INFO L87 Difference]: Start difference. First operand 3653 states and 6327 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:53,637 INFO L93 Difference]: Finished difference Result 7675 states and 12640 transitions. [2023-11-29 04:14:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:14:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:53,661 INFO L225 Difference]: With dead ends: 7675 [2023-11-29 04:14:53,661 INFO L226 Difference]: Without dead ends: 6154 [2023-11-29 04:14:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:14:53,671 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4778 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:53,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4796 Valid, 20827 Invalid, 1742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:14:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2023-11-29 04:14:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4986. [2023-11-29 04:14:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4986 states, 4647 states have (on average 1.6931353561437485) internal successors, (7868), 4665 states have internal predecessors, (7868), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-11-29 04:14:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 8403 transitions. [2023-11-29 04:14:53,950 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 8403 transitions. Word has length 91 [2023-11-29 04:14:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:53,951 INFO L495 AbstractCegarLoop]: Abstraction has 4986 states and 8403 transitions. [2023-11-29 04:14:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 8403 transitions. [2023-11-29 04:14:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:53,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:53,957 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] [2023-11-29 04:14:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:14:53,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:53,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 108433274, now seen corresponding path program 1 times [2023-11-29 04:14:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:53,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65122306] [2023-11-29 04:14:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:54,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:54,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65122306] [2023-11-29 04:14:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65122306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:54,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837261146] [2023-11-29 04:14:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:54,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:54,149 INFO L87 Difference]: Start difference. First operand 4986 states and 8403 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:56,025 INFO L93 Difference]: Finished difference Result 12494 states and 20210 transitions. [2023-11-29 04:14:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:14:56,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:56,055 INFO L225 Difference]: With dead ends: 12494 [2023-11-29 04:14:56,055 INFO L226 Difference]: Without dead ends: 9640 [2023-11-29 04:14:56,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:14:56,069 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4748 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:56,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 20827 Invalid, 1724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:14:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2023-11-29 04:14:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 7651. [2023-11-29 04:14:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 7016 states have (on average 1.6428164196123147) internal successors, (11526), 7050 states have internal predecessors, (11526), 403 states have call successors, (403), 198 states have call predecessors, (403), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-11-29 04:14:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12607 transitions. [2023-11-29 04:14:56,428 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12607 transitions. Word has length 91 [2023-11-29 04:14:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:56,429 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 12607 transitions. [2023-11-29 04:14:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12607 transitions. [2023-11-29 04:14:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:56,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:56,436 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] [2023-11-29 04:14:56,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:14:56,436 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1062373432, now seen corresponding path program 1 times [2023-11-29 04:14:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:56,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341988364] [2023-11-29 04:14:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:56,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:56,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341988364] [2023-11-29 04:14:56,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341988364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:56,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:14:56,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556749403] [2023-11-29 04:14:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:56,601 INFO L87 Difference]: Start difference. First operand 7651 states and 12607 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:58,687 INFO L93 Difference]: Finished difference Result 21475 states and 34508 transitions. [2023-11-29 04:14:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:14:58,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:14:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:58,747 INFO L225 Difference]: With dead ends: 21475 [2023-11-29 04:14:58,747 INFO L226 Difference]: Without dead ends: 15956 [2023-11-29 04:14:58,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:14:58,771 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4670 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 20827 Invalid, 1696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:14:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2023-11-29 04:14:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 13013. [2023-11-29 04:14:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13013 states, 11802 states have (on average 1.6046432807998645) internal successors, (18938), 11868 states have internal predecessors, (18938), 755 states have call successors, (755), 390 states have call predecessors, (755), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-11-29 04:14:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13013 states to 13013 states and 21241 transitions. [2023-11-29 04:14:59,481 INFO L78 Accepts]: Start accepts. Automaton has 13013 states and 21241 transitions. Word has length 91 [2023-11-29 04:14:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:59,482 INFO L495 AbstractCegarLoop]: Abstraction has 13013 states and 21241 transitions. [2023-11-29 04:14:59,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:14:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13013 states and 21241 transitions. [2023-11-29 04:14:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:14:59,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:59,494 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] [2023-11-29 04:14:59,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:14:59,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:59,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash 330406006, now seen corresponding path program 1 times [2023-11-29 04:14:59,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:59,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826776471] [2023-11-29 04:14:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:59,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:14:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:14:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:14:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:14:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:14:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:59,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:59,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826776471] [2023-11-29 04:14:59,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826776471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:59,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:59,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:14:59,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904849677] [2023-11-29 04:14:59,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:59,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:14:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:14:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:14:59,628 INFO L87 Difference]: Start difference. First operand 13013 states and 21241 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:15:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:01,726 INFO L93 Difference]: Finished difference Result 33124 states and 53179 transitions. [2023-11-29 04:15:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:15:01,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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 91 [2023-11-29 04:15:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:01,777 INFO L225 Difference]: With dead ends: 33124 [2023-11-29 04:15:01,777 INFO L226 Difference]: Without dead ends: 22244 [2023-11-29 04:15:01,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:15:01,811 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 4875 mSDsluCounter, 12381 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4906 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:01,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4906 Valid, 16630 Invalid, 1543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:15:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2023-11-29 04:15:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 18457. [2023-11-29 04:15:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18457 states, 16617 states have (on average 1.5798278871035687) internal successors, (26252), 16748 states have internal predecessors, (26252), 1154 states have call successors, (1154), 588 states have call predecessors, (1154), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-11-29 04:15:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18457 states to 18457 states and 29597 transitions. [2023-11-29 04:15:02,588 INFO L78 Accepts]: Start accepts. Automaton has 18457 states and 29597 transitions. Word has length 91 [2023-11-29 04:15:02,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:02,588 INFO L495 AbstractCegarLoop]: Abstraction has 18457 states and 29597 transitions. [2023-11-29 04:15:02,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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) [2023-11-29 04:15:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 18457 states and 29597 transitions. [2023-11-29 04:15:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 04:15:02,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:02,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:15:02,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:02,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -726091468, now seen corresponding path program 1 times [2023-11-29 04:15:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580352389] [2023-11-29 04:15:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:15:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:15:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:15:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:15:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:15:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:15:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:15:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 04:15:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:15:02,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580352389] [2023-11-29 04:15:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580352389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685721738] [2023-11-29 04:15:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:02,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:02,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:15:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:02,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 04:15:03,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685721738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 04:15:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666769747] [2023-11-29 04:15:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:03,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:03,051 INFO L87 Difference]: Start difference. First operand 18457 states and 29597 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 04:15:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:04,295 INFO L93 Difference]: Finished difference Result 50706 states and 80639 transitions. [2023-11-29 04:15:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-11-29 04:15:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:04,387 INFO L225 Difference]: With dead ends: 50706 [2023-11-29 04:15:04,387 INFO L226 Difference]: Without dead ends: 34382 [2023-11-29 04:15:04,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:04,421 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4191 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:04,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:15:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34382 states. [2023-11-29 04:15:05,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34382 to 34282. [2023-11-29 04:15:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34282 states, 30710 states have (on average 1.557896450667535) internal successors, (47843), 30970 states have internal predecessors, (47843), 2204 states have call successors, (2204), 1174 states have call predecessors, (2204), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-11-29 04:15:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34282 states to 34282 states and 54262 transitions. [2023-11-29 04:15:06,044 INFO L78 Accepts]: Start accepts. Automaton has 34282 states and 54262 transitions. Word has length 147 [2023-11-29 04:15:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:06,044 INFO L495 AbstractCegarLoop]: Abstraction has 34282 states and 54262 transitions. [2023-11-29 04:15:06,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 04:15:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 34282 states and 54262 transitions. [2023-11-29 04:15:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 04:15:06,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:06,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:06,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:15:06,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:15:06,292 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:06,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:06,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2103894066, now seen corresponding path program 1 times [2023-11-29 04:15:06,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:06,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521811736] [2023-11-29 04:15:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:15:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:15:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:15:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:15:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:15:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:15:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:15:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 04:15:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:15:06,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521811736] [2023-11-29 04:15:06,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521811736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312764474] [2023-11-29 04:15:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:06,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:06,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:06,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:06,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:15:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:06,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:15:06,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312764474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:06,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:06,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 04:15:06,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471721649] [2023-11-29 04:15:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:06,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:06,705 INFO L87 Difference]: Start difference. First operand 34282 states and 54262 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 04:15:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:09,002 INFO L93 Difference]: Finished difference Result 97981 states and 154794 transitions. [2023-11-29 04:15:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:09,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-11-29 04:15:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:09,152 INFO L225 Difference]: With dead ends: 97981 [2023-11-29 04:15:09,152 INFO L226 Difference]: Without dead ends: 65832 [2023-11-29 04:15:09,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:09,212 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4181 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:09,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:15:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65832 states. [2023-11-29 04:15:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65832 to 65634. [2023-11-29 04:15:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65634 states, 58600 states have (on average 1.543259385665529) internal successors, (90435), 59118 states have internal predecessors, (90435), 4302 states have call successors, (4302), 2346 states have call predecessors, (4302), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-11-29 04:15:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65634 states to 65634 states and 102998 transitions. [2023-11-29 04:15:12,752 INFO L78 Accepts]: Start accepts. Automaton has 65634 states and 102998 transitions. Word has length 147 [2023-11-29 04:15:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:12,752 INFO L495 AbstractCegarLoop]: Abstraction has 65634 states and 102998 transitions. [2023-11-29 04:15:12,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 04:15:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 65634 states and 102998 transitions. [2023-11-29 04:15:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 04:15:12,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:12,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:12,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:15:13,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:15:13,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:13,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:13,019 INFO L85 PathProgramCache]: Analyzing trace with hash 420220080, now seen corresponding path program 1 times [2023-11-29 04:15:13,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:13,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876996361] [2023-11-29 04:15:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:13,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:15:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:15:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:15:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:15:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:15:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:15:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:15:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 04:15:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:15:13,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:13,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876996361] [2023-11-29 04:15:13,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876996361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:13,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092643899] [2023-11-29 04:15:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:13,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:13,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:13,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:15:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:13,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 04:15:13,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092643899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:13,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:13,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 04:15:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714996864] [2023-11-29 04:15:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:13,456 INFO L87 Difference]: Start difference. First operand 65634 states and 102998 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 04:15:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:18,657 INFO L93 Difference]: Finished difference Result 191433 states and 300920 transitions. [2023-11-29 04:15:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:18,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-11-29 04:15:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:19,040 INFO L225 Difference]: With dead ends: 191433 [2023-11-29 04:15:19,040 INFO L226 Difference]: Without dead ends: 127932 [2023-11-29 04:15:19,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:19,176 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4196 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:19,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:15:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127932 states. [2023-11-29 04:15:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127932 to 127538. [2023-11-29 04:15:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127538 states, 113688 states have (on average 1.533486383787207) internal successors, (174339), 114722 states have internal predecessors, (174339), 8394 states have call successors, (8394), 4686 states have call predecessors, (8394), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-11-29 04:15:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127538 states to 127538 states and 198982 transitions. [2023-11-29 04:15:25,032 INFO L78 Accepts]: Start accepts. Automaton has 127538 states and 198982 transitions. Word has length 147 [2023-11-29 04:15:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:25,032 INFO L495 AbstractCegarLoop]: Abstraction has 127538 states and 198982 transitions. [2023-11-29 04:15:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 04:15:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 127538 states and 198982 transitions. [2023-11-29 04:15:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 04:15:25,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:25,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:25,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:15:25,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:15:25,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:25,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash 917804146, now seen corresponding path program 1 times [2023-11-29 04:15:25,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:25,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401502370] [2023-11-29 04:15:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:15:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:15:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:15:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:15:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:15:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:15:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:15:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 04:15:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:15:25,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:25,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401502370] [2023-11-29 04:15:25,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401502370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496356807] [2023-11-29 04:15:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:25,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:25,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:15:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:25,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:25,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:15:25,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496356807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:25,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:25,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 04:15:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958323146] [2023-11-29 04:15:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:25,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:25,657 INFO L87 Difference]: Start difference. First operand 127538 states and 198982 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:15:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:36,114 INFO L93 Difference]: Finished difference Result 374301 states and 588521 transitions. [2023-11-29 04:15:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:36,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 147 [2023-11-29 04:15:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:37,075 INFO L225 Difference]: With dead ends: 374301 [2023-11-29 04:15:37,076 INFO L226 Difference]: Without dead ends: 248897 [2023-11-29 04:15:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:37,261 INFO L413 NwaCegarLoop]: 4462 mSDtfsCounter, 255 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8682 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:37,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 8682 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:15:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248897 states. [2023-11-29 04:15:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248897 to 248897. [2023-11-29 04:15:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248897 states, 221800 states have (on average 1.5256221821460776) internal successors, (338383), 223603 states have internal predecessors, (338383), 16223 states have call successors, (16223), 9336 states have call predecessors, (16223), 10872 states have return successors, (35056), 16085 states have call predecessors, (35056), 16223 states have call successors, (35056) [2023-11-29 04:15:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248897 states to 248897 states and 389662 transitions. [2023-11-29 04:15:49,648 INFO L78 Accepts]: Start accepts. Automaton has 248897 states and 389662 transitions. Word has length 147 [2023-11-29 04:15:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:49,648 INFO L495 AbstractCegarLoop]: Abstraction has 248897 states and 389662 transitions. [2023-11-29 04:15:49,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:15:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 248897 states and 389662 transitions. [2023-11-29 04:15:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 04:15:50,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:50,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:50,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:15:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:15:50,326 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:50,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2029733787, now seen corresponding path program 1 times [2023-11-29 04:15:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615025476] [2023-11-29 04:15:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:15:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:15:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:15:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:15:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:15:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:15:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:15:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 04:15:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:15:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 04:15:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 04:15:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615025476] [2023-11-29 04:15:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615025476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504715113] [2023-11-29 04:15:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:50,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:50,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:50,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:50,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:15:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:50,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:50,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:15:50,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:50,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504715113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:50,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 04:15:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581533564] [2023-11-29 04:15:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:50,835 INFO L87 Difference]: Start difference. First operand 248897 states and 389662 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 04:16:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:10,319 INFO L93 Difference]: Finished difference Result 737455 states and 1161703 transitions. [2023-11-29 04:16:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:16:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2023-11-29 04:16:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:11,945 INFO L225 Difference]: With dead ends: 737455 [2023-11-29 04:16:11,945 INFO L226 Difference]: Without dead ends: 490699 [2023-11-29 04:16:12,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:16:12,379 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4133 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:12,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:16:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490699 states. [2023-11-29 04:16:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490699 to 489129. [2023-11-29 04:16:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489129 states, 435888 states have (on average 1.5198927247366296) internal successors, (662503), 439491 states have internal predecessors, (662503), 31567 states have call successors, (31567), 18600 states have call predecessors, (31567), 21672 states have return successors, (68652), 31165 states have call predecessors, (68652), 31567 states have call successors, (68652) [2023-11-29 04:16:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489129 states to 489129 states and 762722 transitions. [2023-11-29 04:16:35,172 INFO L78 Accepts]: Start accepts. Automaton has 489129 states and 762722 transitions. Word has length 190 [2023-11-29 04:16:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:35,173 INFO L495 AbstractCegarLoop]: Abstraction has 489129 states and 762722 transitions. [2023-11-29 04:16:35,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 04:16:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 489129 states and 762722 transitions. [2023-11-29 04:16:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 04:16:36,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:36,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:16:36,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:16:36,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:16:36,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:16:36,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:36,630 INFO L85 PathProgramCache]: Analyzing trace with hash -556815708, now seen corresponding path program 1 times [2023-11-29 04:16:36,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:16:36,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281506554] [2023-11-29 04:16:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:36,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:16:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:16:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 04:16:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:16:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:16:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:16:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:16:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:16:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 04:16:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 04:16:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 04:16:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 04:16:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:16:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281506554] [2023-11-29 04:16:36,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281506554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:16:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482239732] [2023-11-29 04:16:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:36,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:36,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:16:36,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:16:36,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0795ef09-ab05-4d3e-b03c-d7b40a46c155/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:16:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:36,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:16:36,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:16:37,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:16:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482239732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:16:37,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:16:37,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 04:16:37,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105578008] [2023-11-29 04:16:37,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:16:37,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:16:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:16:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:16:37,116 INFO L87 Difference]: Start difference. First operand 489129 states and 762722 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)