./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label36.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_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label36.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme --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 2937f5953993aa4d6e5a2b4e477fd67f649eb79fefa51556f9f9db8f2ffb7a65 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:30,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:30,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:46:30,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:30,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:30,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:30,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:30,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:30,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:30,487 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:30,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:30,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:30,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:30,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:30,490 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:30,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:30,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:30,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:30,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:30,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:30,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:30,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:30,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:30,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:30,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:30,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:30,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:30,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:30,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:30,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:30,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:30,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:30,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:30,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:30,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:30,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:30,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:30,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:30,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:30,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:30,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:30,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:30,503 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_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2937f5953993aa4d6e5a2b4e477fd67f649eb79fefa51556f9f9db8f2ffb7a65 [2023-11-26 10:46:30,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:30,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:30,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:30,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:30,830 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:30,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/eca-rers2012/Problem16_label36.c [2023-11-26 10:46:34,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:34,535 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:34,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/sv-benchmarks/c/eca-rers2012/Problem16_label36.c [2023-11-26 10:46:34,567 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/data/42c61e992/9fe1a9bd12bf4d99aae7d8ce384ac17f/FLAG3de948b3c [2023-11-26 10:46:34,585 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/data/42c61e992/9fe1a9bd12bf4d99aae7d8ce384ac17f [2023-11-26 10:46:34,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:34,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:34,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:34,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:34,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:34,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:34" (1/1) ... [2023-11-26 10:46:34,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357c5ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:34, skipping insertion in model container [2023-11-26 10:46:34,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:34" (1/1) ... [2023-11-26 10:46:34,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:34,965 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_f86b04c1-0086-4f5e-ac29-8324aa671b0d/sv-benchmarks/c/eca-rers2012/Problem16_label36.c[3906,3919] [2023-11-26 10:46:35,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:35,604 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:35,637 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_f86b04c1-0086-4f5e-ac29-8324aa671b0d/sv-benchmarks/c/eca-rers2012/Problem16_label36.c[3906,3919] [2023-11-26 10:46:35,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:35,873 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:35,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35 WrapperNode [2023-11-26 10:46:35,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:35,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:35,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:35,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:35,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:35,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,072 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2023-11-26 10:46:36,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:36,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:36,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:36,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:36,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,210 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]. [2023-11-26 10:46:36,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:36,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:36,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:36,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:36,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (1/1) ... [2023-11-26 10:46:36,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:36,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:36,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:36,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:36,569 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:36,572 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:39,230 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:39,285 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:39,285 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:46:39,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:39 BoogieIcfgContainer [2023-11-26 10:46:39,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:39,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:39,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:39,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:39,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:34" (1/3) ... [2023-11-26 10:46:39,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401cae14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:39, skipping insertion in model container [2023-11-26 10:46:39,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:35" (2/3) ... [2023-11-26 10:46:39,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401cae14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:39, skipping insertion in model container [2023-11-26 10:46:39,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:39" (3/3) ... [2023-11-26 10:46:39,297 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label36.c [2023-11-26 10:46:39,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:39,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:46:39,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:39,390 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;@1892c5ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:39,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:46:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 10:46:39,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:39,406 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] [2023-11-26 10:46:39,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:39,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2009081248, now seen corresponding path program 1 times [2023-11-26 10:46:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:39,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47792461] [2023-11-26 10:46:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:39,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:39,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47792461] [2023-11-26 10:46:39,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47792461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:39,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:39,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:39,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797212937] [2023-11-26 10:46:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:39,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:46:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:46:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:46:39,646 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:39,711 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-11-26 10:46:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:46:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-26 10:46:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:39,741 INFO L225 Difference]: With dead ends: 667 [2023-11-26 10:46:39,742 INFO L226 Difference]: Without dead ends: 332 [2023-11-26 10:46:39,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:46:39,757 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:39,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-26 10:46:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-11-26 10:46:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-11-26 10:46:39,847 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 35 [2023-11-26 10:46:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:39,848 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-11-26 10:46:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-11-26 10:46:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 10:46:39,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:39,850 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] [2023-11-26 10:46:39,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:46:39,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:39,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash 512329990, now seen corresponding path program 1 times [2023-11-26 10:46:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:39,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822491189] [2023-11-26 10:46:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:40,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:40,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822491189] [2023-11-26 10:46:40,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822491189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:40,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867793141] [2023-11-26 10:46:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:40,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:40,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:40,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:40,238 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:43,557 INFO L93 Difference]: Finished difference Result 1321 states and 2379 transitions. [2023-11-26 10:46:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:43,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-26 10:46:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:43,576 INFO L225 Difference]: With dead ends: 1321 [2023-11-26 10:46:43,576 INFO L226 Difference]: Without dead ends: 990 [2023-11-26 10:46:43,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:43,579 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1028 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:43,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 66 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-26 10:46:43,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-26 10:46:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2023-11-26 10:46:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.4984833164812943) internal successors, (1482), 989 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1482 transitions. [2023-11-26 10:46:43,662 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1482 transitions. Word has length 35 [2023-11-26 10:46:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:43,663 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1482 transitions. [2023-11-26 10:46:43,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1482 transitions. [2023-11-26 10:46:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-26 10:46:43,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:43,682 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 10:46:43,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:46:43,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:43,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:43,683 INFO L85 PathProgramCache]: Analyzing trace with hash -421364994, now seen corresponding path program 1 times [2023-11-26 10:46:43,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:43,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373410421] [2023-11-26 10:46:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:44,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:44,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373410421] [2023-11-26 10:46:44,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373410421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:44,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374077912] [2023-11-26 10:46:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:44,116 INFO L87 Difference]: Start difference. First operand 990 states and 1482 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:45,698 INFO L93 Difference]: Finished difference Result 1979 states and 3167 transitions. [2023-11-26 10:46:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:45,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2023-11-26 10:46:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:45,708 INFO L225 Difference]: With dead ends: 1979 [2023-11-26 10:46:45,709 INFO L226 Difference]: Without dead ends: 1319 [2023-11-26 10:46:45,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:45,711 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 279 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 536 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 10:46:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-11-26 10:46:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-11-26 10:46:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.4241274658573597) internal successors, (1877), 1318 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1877 transitions. [2023-11-26 10:46:45,747 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1877 transitions. Word has length 225 [2023-11-26 10:46:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:45,749 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1877 transitions. [2023-11-26 10:46:45,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1877 transitions. [2023-11-26 10:46:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-11-26 10:46:45,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:45,753 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 10:46:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:45,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:45,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 916880904, now seen corresponding path program 1 times [2023-11-26 10:46:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208696663] [2023-11-26 10:46:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-26 10:46:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:46,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208696663] [2023-11-26 10:46:46,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208696663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:46,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678177636] [2023-11-26 10:46:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:46,087 INFO L87 Difference]: Start difference. First operand 1319 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:47,985 INFO L93 Difference]: Finished difference Result 3295 states and 4946 transitions. [2023-11-26 10:46:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:47,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-11-26 10:46:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:47,998 INFO L225 Difference]: With dead ends: 3295 [2023-11-26 10:46:47,998 INFO L226 Difference]: Without dead ends: 1977 [2023-11-26 10:46:48,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:48,008 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 339 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:48,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 154 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:46:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-11-26 10:46:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2023-11-26 10:46:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.1336032388663968) internal successors, (2240), 1976 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2240 transitions. [2023-11-26 10:46:48,065 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2240 transitions. Word has length 228 [2023-11-26 10:46:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:48,067 INFO L495 AbstractCegarLoop]: Abstraction has 1977 states and 2240 transitions. [2023-11-26 10:46:48,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2240 transitions. [2023-11-26 10:46:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-11-26 10:46:48,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:48,074 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:48,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:46:48,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:48,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2096784185, now seen corresponding path program 1 times [2023-11-26 10:46:48,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:48,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399825132] [2023-11-26 10:46:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:48,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-26 10:46:48,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:48,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399825132] [2023-11-26 10:46:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399825132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672177446] [2023-11-26 10:46:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:48,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:48,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:48,509 INFO L87 Difference]: Start difference. First operand 1977 states and 2240 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:49,698 INFO L93 Difference]: Finished difference Result 3953 states and 4507 transitions. [2023-11-26 10:46:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2023-11-26 10:46:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:49,712 INFO L225 Difference]: With dead ends: 3953 [2023-11-26 10:46:49,712 INFO L226 Difference]: Without dead ends: 2306 [2023-11-26 10:46:49,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:49,716 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 262 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:49,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 29 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:46:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-11-26 10:46:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-11-26 10:46:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.0928416485900216) internal successors, (2519), 2305 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2519 transitions. [2023-11-26 10:46:49,768 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2519 transitions. Word has length 354 [2023-11-26 10:46:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:49,769 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 2519 transitions. [2023-11-26 10:46:49,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2519 transitions. [2023-11-26 10:46:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-11-26 10:46:49,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:49,785 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:46:49,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1816686343, now seen corresponding path program 1 times [2023-11-26 10:46:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066618424] [2023-11-26 10:46:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 639 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-26 10:46:50,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:50,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066618424] [2023-11-26 10:46:50,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066618424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:50,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:50,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805569309] [2023-11-26 10:46:50,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:50,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:50,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:50,591 INFO L87 Difference]: Start difference. First operand 2306 states and 2519 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:51,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:51,853 INFO L93 Difference]: Finished difference Result 5927 states and 6508 transitions. [2023-11-26 10:46:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:51,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 612 [2023-11-26 10:46:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:51,876 INFO L225 Difference]: With dead ends: 5927 [2023-11-26 10:46:51,877 INFO L226 Difference]: Without dead ends: 3951 [2023-11-26 10:46:51,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:51,918 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 219 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:51,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 425 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:46:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-11-26 10:46:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3622. [2023-11-26 10:46:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 1.0668323667495168) internal successors, (3863), 3621 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 3863 transitions. [2023-11-26 10:46:52,005 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 3863 transitions. Word has length 612 [2023-11-26 10:46:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:52,010 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 3863 transitions. [2023-11-26 10:46:52,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 3863 transitions. [2023-11-26 10:46:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-11-26 10:46:52,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:52,034 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:46:52,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:52,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash 536011685, now seen corresponding path program 1 times [2023-11-26 10:46:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751221327] [2023-11-26 10:46:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:52,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-26 10:46:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751221327] [2023-11-26 10:46:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751221327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:52,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:52,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749414511] [2023-11-26 10:46:52,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:52,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:52,831 INFO L87 Difference]: Start difference. First operand 3622 states and 3863 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:54,057 INFO L93 Difference]: Finished difference Result 8559 states and 9236 transitions. [2023-11-26 10:46:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:54,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 675 [2023-11-26 10:46:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:54,086 INFO L225 Difference]: With dead ends: 8559 [2023-11-26 10:46:54,086 INFO L226 Difference]: Without dead ends: 5267 [2023-11-26 10:46:54,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:54,091 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 171 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:54,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 429 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:46:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5267 states. [2023-11-26 10:46:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5267 to 5267. [2023-11-26 10:46:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 1.0569692366122294) internal successors, (5566), 5266 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 5566 transitions. [2023-11-26 10:46:54,209 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 5566 transitions. Word has length 675 [2023-11-26 10:46:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:54,211 INFO L495 AbstractCegarLoop]: Abstraction has 5267 states and 5566 transitions. [2023-11-26 10:46:54,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 5566 transitions. [2023-11-26 10:46:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-26 10:46:54,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:54,222 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2023-11-26 10:46:54,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:46:54,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:54,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1244362525, now seen corresponding path program 1 times [2023-11-26 10:46:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:54,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608123823] [2023-11-26 10:46:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:54,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 280 proven. 452 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-26 10:46:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608123823] [2023-11-26 10:46:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608123823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:55,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670696382] [2023-11-26 10:46:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:55,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:55,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:55,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:55,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:56,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:46:56,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2023-11-26 10:46:56,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:56,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670696382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:56,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:56,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 10:46:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489531557] [2023-11-26 10:46:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:56,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:56,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:56,617 INFO L87 Difference]: Start difference. First operand 5267 states and 5566 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:57,883 INFO L93 Difference]: Finished difference Result 10204 states and 10800 transitions. [2023-11-26 10:46:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 700 [2023-11-26 10:46:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:57,912 INFO L225 Difference]: With dead ends: 10204 [2023-11-26 10:46:57,912 INFO L226 Difference]: Without dead ends: 5267 [2023-11-26 10:46:57,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:57,919 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 258 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:57,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 374 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:46:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5267 states. [2023-11-26 10:46:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5267 to 5267. [2023-11-26 10:46:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 1.0488036460311432) internal successors, (5523), 5266 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 5523 transitions. [2023-11-26 10:46:58,031 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 5523 transitions. Word has length 700 [2023-11-26 10:46:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:58,033 INFO L495 AbstractCegarLoop]: Abstraction has 5267 states and 5523 transitions. [2023-11-26 10:46:58,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 5523 transitions. [2023-11-26 10:46:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2023-11-26 10:46:58,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:58,047 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 10:46:58,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86b04c1-0086-4f5e-ac29-8324aa671b0d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:58,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:58,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1942305717, now seen corresponding path program 1 times [2023-11-26 10:46:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407602366] [2023-11-26 10:46:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2023-11-26 10:46:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407602366] [2023-11-26 10:46:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407602366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009512426] [2023-11-26 10:46:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:59,254 INFO L87 Difference]: Start difference. First operand 5267 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:00,506 INFO L93 Difference]: Finished difference Result 11849 states and 12501 transitions. [2023-11-26 10:47:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:00,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 820 [2023-11-26 10:47:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:00,542 INFO L225 Difference]: With dead ends: 11849 [2023-11-26 10:47:00,542 INFO L226 Difference]: Without dead ends: 6912 [2023-11-26 10:47:00,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:00,550 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 218 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:00,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 79 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:47:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2023-11-26 10:47:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6583. [2023-11-26 10:47:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6583 states, 6582 states have (on average 1.0431479793375873) internal successors, (6866), 6582 states have internal predecessors, (6866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6583 states to 6583 states and 6866 transitions. [2023-11-26 10:47:00,683 INFO L78 Accepts]: Start accepts. Automaton has 6583 states and 6866 transitions. Word has length 820 [2023-11-26 10:47:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:00,684 INFO L495 AbstractCegarLoop]: Abstraction has 6583 states and 6866 transitions. [2023-11-26 10:47:00,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6583 states and 6866 transitions. [2023-11-26 10:47:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2023-11-26 10:47:00,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:00,705 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 10:47:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:47:00,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:00,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash 38589068, now seen corresponding path program 1 times [2023-11-26 10:47:00,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:00,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856480969] [2023-11-26 10:47:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:00,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 1481 proven. 0 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2023-11-26 10:47:02,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:02,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856480969] [2023-11-26 10:47:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856480969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:02,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:02,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:02,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940634706] [2023-11-26 10:47:02,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:02,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:02,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:02,856 INFO L87 Difference]: Start difference. First operand 6583 states and 6866 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:04,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:04,045 INFO L93 Difference]: Finished difference Result 14152 states and 14796 transitions. [2023-11-26 10:47:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1143 [2023-11-26 10:47:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:04,079 INFO L225 Difference]: With dead ends: 14152 [2023-11-26 10:47:04,086 INFO L226 Difference]: Without dead ends: 7899 [2023-11-26 10:47:04,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:04,095 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:04,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 436 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:47:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-11-26 10:47:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7570. [2023-11-26 10:47:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.0384462940943322) internal successors, (7860), 7569 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 7860 transitions. [2023-11-26 10:47:04,261 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 7860 transitions. Word has length 1143 [2023-11-26 10:47:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:04,263 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 7860 transitions. [2023-11-26 10:47:04,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:04,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 7860 transitions. [2023-11-26 10:47:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2023-11-26 10:47:04,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:04,297 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:47:04,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:04,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2123150903, now seen corresponding path program 1 times [2023-11-26 10:47:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421397171] [2023-11-26 10:47:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2023-11-26 10:47:05,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421397171] [2023-11-26 10:47:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421397171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:05,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:05,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214916299] [2023-11-26 10:47:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:05,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:05,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:05,563 INFO L87 Difference]: Start difference. First operand 7570 states and 7860 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:06,675 INFO L93 Difference]: Finished difference Result 15797 states and 16385 transitions. [2023-11-26 10:47:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1161 [2023-11-26 10:47:06,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:06,692 INFO L225 Difference]: With dead ends: 15797 [2023-11-26 10:47:06,692 INFO L226 Difference]: Without dead ends: 7570 [2023-11-26 10:47:06,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:06,702 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:06,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 407 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:47:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7570 states. [2023-11-26 10:47:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7570 to 7570. [2023-11-26 10:47:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.0270841590698903) internal successors, (7774), 7569 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 7774 transitions. [2023-11-26 10:47:06,819 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 7774 transitions. Word has length 1161 [2023-11-26 10:47:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:06,821 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 7774 transitions. [2023-11-26 10:47:06,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 7774 transitions. [2023-11-26 10:47:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1470 [2023-11-26 10:47:06,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:06,852 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-26 10:47:06,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:47:06,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:06,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1678401652, now seen corresponding path program 1 times [2023-11-26 10:47:06,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803417049] [2023-11-26 10:47:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3711 backedges. 2683 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2023-11-26 10:47:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803417049] [2023-11-26 10:47:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803417049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:09,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:09,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:47:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794072417] [2023-11-26 10:47:09,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:09,883 INFO L87 Difference]: Start difference. First operand 7570 states and 7774 transitions. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:11,248 INFO L93 Difference]: Finished difference Result 14816 states and 15222 transitions. [2023-11-26 10:47:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1469 [2023-11-26 10:47:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:11,265 INFO L225 Difference]: With dead ends: 14816 [2023-11-26 10:47:11,265 INFO L226 Difference]: Without dead ends: 7576 [2023-11-26 10:47:11,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:47:11,273 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 262 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:11,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 434 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:47:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2023-11-26 10:47:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 7570. [2023-11-26 10:47:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.0268199233716475) internal successors, (7772), 7569 states have internal predecessors, (7772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 7772 transitions. [2023-11-26 10:47:11,379 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 7772 transitions. Word has length 1469 [2023-11-26 10:47:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:11,380 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 7772 transitions. [2023-11-26 10:47:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 7772 transitions. [2023-11-26 10:47:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2023-11-26 10:47:11,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:11,413 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:47:11,414 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:11,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1102676581, now seen corresponding path program 1 times [2023-11-26 10:47:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:11,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412675258] [2023-11-26 10:47:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5178 backedges. 1432 proven. 0 refuted. 0 times theorem prover too weak. 3746 trivial. 0 not checked. [2023-11-26 10:47:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412675258] [2023-11-26 10:47:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412675258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:12,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267303082] [2023-11-26 10:47:12,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:12,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:12,897 INFO L87 Difference]: Start difference. First operand 7570 states and 7772 transitions. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:13,916 INFO L93 Difference]: Finished difference Result 16455 states and 16949 transitions. [2023-11-26 10:47:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:13,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1618 [2023-11-26 10:47:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:13,938 INFO L225 Difference]: With dead ends: 16455 [2023-11-26 10:47:13,939 INFO L226 Difference]: Without dead ends: 8886 [2023-11-26 10:47:13,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:13,946 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 162 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:13,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 427 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:47:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8886 states. [2023-11-26 10:47:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8886 to 8886. [2023-11-26 10:47:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8886 states, 8885 states have (on average 1.0249859313449634) internal successors, (9107), 8885 states have internal predecessors, (9107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 9107 transitions. [2023-11-26 10:47:14,070 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 9107 transitions. Word has length 1618 [2023-11-26 10:47:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:14,072 INFO L495 AbstractCegarLoop]: Abstraction has 8886 states and 9107 transitions. [2023-11-26 10:47:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 9107 transitions. [2023-11-26 10:47:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2023-11-26 10:47:14,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:14,154 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:14,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:47:14,155 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:14,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash -932955932, now seen corresponding path program 1 times [2023-11-26 10:47:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:14,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861899124] [2023-11-26 10:47:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat