./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9188b0bb7d345bde8858a6e4085c80a345a783efac7d50b39494fde4a7e156f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:32:08,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:32:08,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:32:08,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:32:08,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:32:08,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:32:08,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:32:08,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:32:08,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:32:08,858 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:32:08,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:32:08,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:32:08,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:32:08,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:32:08,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:32:08,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:32:08,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:32:08,863 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:32:08,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:32:08,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:32:08,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:32:08,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:32:08,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:32:08,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:32:08,866 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:32:08,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:32:08,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:32:08,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:32:08,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:32:08,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:32:08,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:32:08,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:32:08,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:32:08,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:32:08,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:32:08,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:32:08,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:32:08,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:32:08,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:32:08,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:32:08,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:32:08,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:32:08,872 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_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9188b0bb7d345bde8858a6e4085c80a345a783efac7d50b39494fde4a7e156f [2023-11-29 02:32:09,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:32:09,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:32:09,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:32:09,103 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:32:09,104 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:32:09,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2023-11-29 02:32:11,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:32:12,123 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:32:12,124 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2023-11-29 02:32:12,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/data/e863b47bc/5c378e0f92ca431c8fb022815a1b7ef6/FLAG9f81f79d9 [2023-11-29 02:32:12,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/data/e863b47bc/5c378e0f92ca431c8fb022815a1b7ef6 [2023-11-29 02:32:12,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:32:12,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:32:12,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:32:12,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:32:12,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:32:12,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb8dfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12, skipping insertion in model container [2023-11-29 02:32:12,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,222 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:32:12,398 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_e17817b3-8565-46f5-9edf-e3261fc7396e/sv-benchmarks/c/eca-rers2012/Problem14_label51.c[3722,3735] [2023-11-29 02:32:12,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:32:12,571 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:32:12,592 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_e17817b3-8565-46f5-9edf-e3261fc7396e/sv-benchmarks/c/eca-rers2012/Problem14_label51.c[3722,3735] [2023-11-29 02:32:12,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:32:12,713 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:32:12,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12 WrapperNode [2023-11-29 02:32:12,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:32:12,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:32:12,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:32:12,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:32:12,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,816 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2023-11-29 02:32:12,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:32:12,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:32:12,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:32:12,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:32:12,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,898 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:32:12,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,933 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:32:12,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:32:12,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:32:12,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:32:12,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (1/1) ... [2023-11-29 02:32:12,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:32:12,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:12,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:32:13,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:32:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:32:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:32:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:32:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:32:13,102 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:32:13,104 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:32:14,203 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:32:14,253 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:32:14,253 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:32:14,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:32:14 BoogieIcfgContainer [2023-11-29 02:32:14,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:32:14,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:32:14,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:32:14,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:32:14,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:32:12" (1/3) ... [2023-11-29 02:32:14,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7d9fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:32:14, skipping insertion in model container [2023-11-29 02:32:14,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:32:12" (2/3) ... [2023-11-29 02:32:14,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7d9fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:32:14, skipping insertion in model container [2023-11-29 02:32:14,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:32:14" (3/3) ... [2023-11-29 02:32:14,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label51.c [2023-11-29 02:32:14,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:32:14,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:32:14,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:32:14,349 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;@3bc570f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:32:14,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:32:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 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) [2023-11-29 02:32:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 02:32:14,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:14,363 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] [2023-11-29 02:32:14,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:14,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 541512402, now seen corresponding path program 1 times [2023-11-29 02:32:14,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:14,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567151205] [2023-11-29 02:32:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:14,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:32:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567151205] [2023-11-29 02:32:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567151205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:14,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:32:14,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657704718] [2023-11-29 02:32:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:32:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:32:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:32:14,564 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2023-11-29 02:32:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:14,605 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2023-11-29 02:32:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:32:14,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2023-11-29 02:32:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:14,618 INFO L225 Difference]: With dead ends: 365 [2023-11-29 02:32:14,618 INFO L226 Difference]: Without dead ends: 181 [2023-11-29 02:32:14,621 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 [2023-11-29 02:32:14,624 INFO L413 NwaCegarLoop]: 295 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, 295 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 [2023-11-29 02:32:14,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:32:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-29 02:32:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-29 02:32:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 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) [2023-11-29 02:32:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2023-11-29 02:32:14,667 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 34 [2023-11-29 02:32:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:14,668 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2023-11-29 02:32:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2023-11-29 02:32:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2023-11-29 02:32:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 02:32:14,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:14,670 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] [2023-11-29 02:32:14,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:32:14,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:14,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -691742643, now seen corresponding path program 1 times [2023-11-29 02:32:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267917893] [2023-11-29 02:32:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:32:14,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:14,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267917893] [2023-11-29 02:32:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267917893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:32:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685377255] [2023-11-29 02:32:14,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:14,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:32:14,808 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2023-11-29 02:32:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:15,702 INFO L93 Difference]: Finished difference Result 539 states and 882 transitions. [2023-11-29 02:32:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:15,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2023-11-29 02:32:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:15,706 INFO L225 Difference]: With dead ends: 539 [2023-11-29 02:32:15,707 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 02:32:15,708 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 [2023-11-29 02:32:15,709 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 164 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:15,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 87 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:32:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 02:32:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-11-29 02:32:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 358 states have internal predecessors, (509), 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) [2023-11-29 02:32:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2023-11-29 02:32:15,735 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 34 [2023-11-29 02:32:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:15,736 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2023-11-29 02:32:15,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2023-11-29 02:32:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2023-11-29 02:32:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 02:32:15,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:15,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:32:15,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1007349763, now seen corresponding path program 1 times [2023-11-29 02:32:15,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149061748] [2023-11-29 02:32:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:32:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149061748] [2023-11-29 02:32:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149061748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233506940] [2023-11-29 02:32:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:32:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:32:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:16,160 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-29 02:32:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:17,156 INFO L93 Difference]: Finished difference Result 1073 states and 1445 transitions. [2023-11-29 02:32:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:32:17,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2023-11-29 02:32:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:17,162 INFO L225 Difference]: With dead ends: 1073 [2023-11-29 02:32:17,162 INFO L226 Difference]: Without dead ends: 715 [2023-11-29 02:32:17,164 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 [2023-11-29 02:32:17,165 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 418 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:17,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 119 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:32:17,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-29 02:32:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-11-29 02:32:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.2619047619047619) internal successors, (901), 714 states have internal predecessors, (901), 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) [2023-11-29 02:32:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 901 transitions. [2023-11-29 02:32:17,200 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 901 transitions. Word has length 113 [2023-11-29 02:32:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:17,201 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 901 transitions. [2023-11-29 02:32:17,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-29 02:32:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 901 transitions. [2023-11-29 02:32:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 02:32:17,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:17,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:17,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:32:17,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:17,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 498573092, now seen corresponding path program 1 times [2023-11-29 02:32:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759707929] [2023-11-29 02:32:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:32:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759707929] [2023-11-29 02:32:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759707929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785549879] [2023-11-29 02:32:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:17,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:17,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:17,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:32:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:17,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:17,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 02:32:17,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785549879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:17,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-29 02:32:17,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522469790] [2023-11-29 02:32:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:17,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:17,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:32:17,784 INFO L87 Difference]: Start difference. First operand 715 states and 901 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2023-11-29 02:32:18,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:18,457 INFO L93 Difference]: Finished difference Result 1251 states and 1611 transitions. [2023-11-29 02:32:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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 139 [2023-11-29 02:32:18,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:18,464 INFO L225 Difference]: With dead ends: 1251 [2023-11-29 02:32:18,465 INFO L226 Difference]: Without dead ends: 1249 [2023-11-29 02:32:18,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:32:18,466 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 91 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:18,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 34 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:32:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-11-29 02:32:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 893. [2023-11-29 02:32:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.3374439461883407) internal successors, (1193), 892 states have internal predecessors, (1193), 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) [2023-11-29 02:32:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1193 transitions. [2023-11-29 02:32:18,497 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1193 transitions. Word has length 139 [2023-11-29 02:32:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:18,498 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1193 transitions. [2023-11-29 02:32:18,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2023-11-29 02:32:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1193 transitions. [2023-11-29 02:32:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:32:18,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:18,505 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:32:18,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:32:18,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:18,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:18,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1879662704, now seen corresponding path program 1 times [2023-11-29 02:32:18,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:18,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576512756] [2023-11-29 02:32:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:32:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576512756] [2023-11-29 02:32:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576512756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:19,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451175709] [2023-11-29 02:32:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:19,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:32:19,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:32:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:19,011 INFO L87 Difference]: Start difference. First operand 893 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 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) [2023-11-29 02:32:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:19,799 INFO L93 Difference]: Finished difference Result 1992 states and 2628 transitions. [2023-11-29 02:32:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:32:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 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 193 [2023-11-29 02:32:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:19,806 INFO L225 Difference]: With dead ends: 1992 [2023-11-29 02:32:19,806 INFO L226 Difference]: Without dead ends: 1071 [2023-11-29 02:32:19,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:19,809 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 116 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:19,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 116 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:32:19,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-11-29 02:32:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-11-29 02:32:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.1803738317757009) internal successors, (1263), 1070 states have internal predecessors, (1263), 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) [2023-11-29 02:32:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1263 transitions. [2023-11-29 02:32:19,839 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1263 transitions. Word has length 193 [2023-11-29 02:32:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:19,839 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1263 transitions. [2023-11-29 02:32:19,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 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) [2023-11-29 02:32:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1263 transitions. [2023-11-29 02:32:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 02:32:19,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:19,843 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:32:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:32:19,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:19,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -233496812, now seen corresponding path program 1 times [2023-11-29 02:32:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:19,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470248905] [2023-11-29 02:32:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:32:20,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:20,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470248905] [2023-11-29 02:32:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470248905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:20,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130549837] [2023-11-29 02:32:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:20,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:20,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:20,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:32:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:20,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:20,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-29 02:32:20,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:20,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130549837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:20,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:20,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-29 02:32:20,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59266411] [2023-11-29 02:32:20,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:20,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:20,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:20,584 INFO L87 Difference]: Start difference. First operand 1071 states and 1263 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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) [2023-11-29 02:32:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:21,137 INFO L93 Difference]: Finished difference Result 2319 states and 2778 transitions. [2023-11-29 02:32:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 205 [2023-11-29 02:32:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:21,144 INFO L225 Difference]: With dead ends: 2319 [2023-11-29 02:32:21,144 INFO L226 Difference]: Without dead ends: 1249 [2023-11-29 02:32:21,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:21,146 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 84 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:21,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 45 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:32:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-11-29 02:32:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1071. [2023-11-29 02:32:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.1672897196261682) internal successors, (1249), 1070 states have internal predecessors, (1249), 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) [2023-11-29 02:32:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1249 transitions. [2023-11-29 02:32:21,166 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1249 transitions. Word has length 205 [2023-11-29 02:32:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:21,167 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1249 transitions. [2023-11-29 02:32:21,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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) [2023-11-29 02:32:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1249 transitions. [2023-11-29 02:32:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 02:32:21,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:21,169 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:32:21,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:32:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:21,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:21,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash -588107885, now seen corresponding path program 1 times [2023-11-29 02:32:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:21,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610923239] [2023-11-29 02:32:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:32:21,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610923239] [2023-11-29 02:32:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610923239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:21,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784721637] [2023-11-29 02:32:21,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:32:21,642 INFO L87 Difference]: Start difference. First operand 1071 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-11-29 02:32:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:22,220 INFO L93 Difference]: Finished difference Result 2853 states and 3361 transitions. [2023-11-29 02:32:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 208 [2023-11-29 02:32:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:22,230 INFO L225 Difference]: With dead ends: 2853 [2023-11-29 02:32:22,230 INFO L226 Difference]: Without dead ends: 1783 [2023-11-29 02:32:22,231 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 [2023-11-29 02:32:22,232 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:22,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 75 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:32:22,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2023-11-29 02:32:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2023-11-29 02:32:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.1365336658354115) internal successors, (1823), 1604 states have internal predecessors, (1823), 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) [2023-11-29 02:32:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1823 transitions. [2023-11-29 02:32:22,272 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1823 transitions. Word has length 208 [2023-11-29 02:32:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:22,273 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 1823 transitions. [2023-11-29 02:32:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-11-29 02:32:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1823 transitions. [2023-11-29 02:32:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-29 02:32:22,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:22,278 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, 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, 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] [2023-11-29 02:32:22,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:32:22,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:22,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1583549789, now seen corresponding path program 1 times [2023-11-29 02:32:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018933907] [2023-11-29 02:32:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 02:32:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018933907] [2023-11-29 02:32:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018933907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:22,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:22,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400587665] [2023-11-29 02:32:22,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:22,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:32:22,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:32:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:22,684 INFO L87 Difference]: Start difference. First operand 1605 states and 1823 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 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) [2023-11-29 02:32:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:23,315 INFO L93 Difference]: Finished difference Result 3267 states and 3726 transitions. [2023-11-29 02:32:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:32:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 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 325 [2023-11-29 02:32:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:23,325 INFO L225 Difference]: With dead ends: 3267 [2023-11-29 02:32:23,325 INFO L226 Difference]: Without dead ends: 1783 [2023-11-29 02:32:23,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:23,328 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:23,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 14 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:32:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2023-11-29 02:32:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2023-11-29 02:32:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.0910224438902743) internal successors, (1750), 1604 states have internal predecessors, (1750), 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) [2023-11-29 02:32:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1750 transitions. [2023-11-29 02:32:23,366 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1750 transitions. Word has length 325 [2023-11-29 02:32:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:23,367 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 1750 transitions. [2023-11-29 02:32:23,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 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) [2023-11-29 02:32:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1750 transitions. [2023-11-29 02:32:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-11-29 02:32:23,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:23,376 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, 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, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 02:32:23,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:32:23,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:23,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1147790125, now seen corresponding path program 1 times [2023-11-29 02:32:23,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:23,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174963835] [2023-11-29 02:32:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:23,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-29 02:32:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:23,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174963835] [2023-11-29 02:32:23,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174963835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:23,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518707657] [2023-11-29 02:32:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:32:23,889 INFO L87 Difference]: Start difference. First operand 1605 states and 1750 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-11-29 02:32:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:24,447 INFO L93 Difference]: Finished difference Result 3921 states and 4308 transitions. [2023-11-29 02:32:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 420 [2023-11-29 02:32:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:24,460 INFO L225 Difference]: With dead ends: 3921 [2023-11-29 02:32:24,460 INFO L226 Difference]: Without dead ends: 2495 [2023-11-29 02:32:24,463 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 [2023-11-29 02:32:24,463 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:24,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 242 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:32:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-11-29 02:32:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1961. [2023-11-29 02:32:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 1.0760204081632654) internal successors, (2109), 1960 states have internal predecessors, (2109), 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) [2023-11-29 02:32:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2109 transitions. [2023-11-29 02:32:24,529 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2109 transitions. Word has length 420 [2023-11-29 02:32:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:24,530 INFO L495 AbstractCegarLoop]: Abstraction has 1961 states and 2109 transitions. [2023-11-29 02:32:24,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-11-29 02:32:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2109 transitions. [2023-11-29 02:32:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-29 02:32:24,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:24,539 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, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:24,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:32:24,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:24,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash 141124226, now seen corresponding path program 1 times [2023-11-29 02:32:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:24,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228867980] [2023-11-29 02:32:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-29 02:32:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228867980] [2023-11-29 02:32:24,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228867980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:24,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:24,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170822619] [2023-11-29 02:32:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:32:24,981 INFO L87 Difference]: Start difference. First operand 1961 states and 2109 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-29 02:32:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:25,541 INFO L93 Difference]: Finished difference Result 4455 states and 4860 transitions. [2023-11-29 02:32:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 427 [2023-11-29 02:32:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:25,553 INFO L225 Difference]: With dead ends: 4455 [2023-11-29 02:32:25,553 INFO L226 Difference]: Without dead ends: 2673 [2023-11-29 02:32:25,555 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 [2023-11-29 02:32:25,555 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 113 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:25,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 199 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:32:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2023-11-29 02:32:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2673. [2023-11-29 02:32:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 1.0819610778443114) internal successors, (2891), 2672 states have internal predecessors, (2891), 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) [2023-11-29 02:32:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 2891 transitions. [2023-11-29 02:32:25,600 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 2891 transitions. Word has length 427 [2023-11-29 02:32:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:25,601 INFO L495 AbstractCegarLoop]: Abstraction has 2673 states and 2891 transitions. [2023-11-29 02:32:25,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-29 02:32:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 2891 transitions. [2023-11-29 02:32:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-11-29 02:32:25,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:25,604 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:25,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:32:25,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:25,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1113096845, now seen corresponding path program 1 times [2023-11-29 02:32:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494489738] [2023-11-29 02:32:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-29 02:32:25,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494489738] [2023-11-29 02:32:25,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494489738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:25,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:25,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:25,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514851463] [2023-11-29 02:32:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:25,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:25,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:32:25,854 INFO L87 Difference]: Start difference. First operand 2673 states and 2891 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-11-29 02:32:26,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:26,439 INFO L93 Difference]: Finished difference Result 6413 states and 7026 transitions. [2023-11-29 02:32:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 468 [2023-11-29 02:32:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:26,456 INFO L225 Difference]: With dead ends: 6413 [2023-11-29 02:32:26,456 INFO L226 Difference]: Without dead ends: 3919 [2023-11-29 02:32:26,460 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 [2023-11-29 02:32:26,460 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 50 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:32:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2023-11-29 02:32:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3563. [2023-11-29 02:32:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3562 states have (on average 1.0777653003930376) internal successors, (3839), 3562 states have internal predecessors, (3839), 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) [2023-11-29 02:32:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 3839 transitions. [2023-11-29 02:32:26,524 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 3839 transitions. Word has length 468 [2023-11-29 02:32:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:26,525 INFO L495 AbstractCegarLoop]: Abstraction has 3563 states and 3839 transitions. [2023-11-29 02:32:26,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-11-29 02:32:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 3839 transitions. [2023-11-29 02:32:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2023-11-29 02:32:26,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:26,530 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:26,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:32:26,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:26,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1563513047, now seen corresponding path program 1 times [2023-11-29 02:32:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253825684] [2023-11-29 02:32:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:26,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1034 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:27,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253825684] [2023-11-29 02:32:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253825684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:27,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115469792] [2023-11-29 02:32:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:27,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:27,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:27,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:32:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:27,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:27,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2023-11-29 02:32:27,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115469792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:27,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:27,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 02:32:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314167971] [2023-11-29 02:32:27,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:27,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:27,478 INFO L87 Difference]: Start difference. First operand 3563 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-11-29 02:32:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:27,900 INFO L93 Difference]: Finished difference Result 7659 states and 8268 transitions. [2023-11-29 02:32:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:27,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 613 [2023-11-29 02:32:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:27,914 INFO L225 Difference]: With dead ends: 7659 [2023-11-29 02:32:27,914 INFO L226 Difference]: Without dead ends: 3563 [2023-11-29 02:32:27,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:27,919 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 146 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:27,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 244 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2023-11-29 02:32:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3207. [2023-11-29 02:32:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0723643169058017) internal successors, (3438), 3206 states have internal predecessors, (3438), 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) [2023-11-29 02:32:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3438 transitions. [2023-11-29 02:32:27,992 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3438 transitions. Word has length 613 [2023-11-29 02:32:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:27,993 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 3438 transitions. [2023-11-29 02:32:27,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-11-29 02:32:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3438 transitions. [2023-11-29 02:32:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-11-29 02:32:28,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:28,000 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:28,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:32:28,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:28,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:28,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 407756487, now seen corresponding path program 1 times [2023-11-29 02:32:28,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:28,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750051162] [2023-11-29 02:32:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:28,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 1089 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:29,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750051162] [2023-11-29 02:32:29,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750051162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876640530] [2023-11-29 02:32:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:29,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:29,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:32:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:29,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:29,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2023-11-29 02:32:29,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:29,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876640530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:29,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:29,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 02:32:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705445989] [2023-11-29 02:32:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:29,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:29,461 INFO L87 Difference]: Start difference. First operand 3207 states and 3438 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-11-29 02:32:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:29,915 INFO L93 Difference]: Finished difference Result 6769 states and 7306 transitions. [2023-11-29 02:32:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:29,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 625 [2023-11-29 02:32:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:29,929 INFO L225 Difference]: With dead ends: 6769 [2023-11-29 02:32:29,929 INFO L226 Difference]: Without dead ends: 3741 [2023-11-29 02:32:29,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:29,932 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 146 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:29,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 223 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2023-11-29 02:32:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3385. [2023-11-29 02:32:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3384 states have (on average 1.0679669030732861) internal successors, (3614), 3384 states have internal predecessors, (3614), 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) [2023-11-29 02:32:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 3614 transitions. [2023-11-29 02:32:29,988 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 3614 transitions. Word has length 625 [2023-11-29 02:32:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:29,989 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 3614 transitions. [2023-11-29 02:32:29,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-11-29 02:32:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 3614 transitions. [2023-11-29 02:32:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-11-29 02:32:29,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:29,994 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:29,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:32:30,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:30,195 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:30,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1783670664, now seen corresponding path program 1 times [2023-11-29 02:32:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:30,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57792247] [2023-11-29 02:32:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 1165 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:30,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57792247] [2023-11-29 02:32:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57792247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897172479] [2023-11-29 02:32:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:30,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:30,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:30,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:30,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:32:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:31,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:32:31,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 1192 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-11-29 02:32:31,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897172479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:31,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:31,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 02:32:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479989067] [2023-11-29 02:32:31,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:31,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:31,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:31,708 INFO L87 Difference]: Start difference. First operand 3385 states and 3614 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2023-11-29 02:32:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:32,164 INFO L93 Difference]: Finished difference Result 6769 states and 7231 transitions. [2023-11-29 02:32:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 644 [2023-11-29 02:32:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:32,176 INFO L225 Difference]: With dead ends: 6769 [2023-11-29 02:32:32,176 INFO L226 Difference]: Without dead ends: 3385 [2023-11-29 02:32:32,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:32,179 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:32,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 230 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2023-11-29 02:32:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 3385. [2023-11-29 02:32:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3384 states have (on average 1.059692671394799) internal successors, (3586), 3384 states have internal predecessors, (3586), 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) [2023-11-29 02:32:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 3586 transitions. [2023-11-29 02:32:32,242 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 3586 transitions. Word has length 644 [2023-11-29 02:32:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:32,243 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 3586 transitions. [2023-11-29 02:32:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2023-11-29 02:32:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 3586 transitions. [2023-11-29 02:32:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-11-29 02:32:32,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:32,266 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:32,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:32:32,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:32:32,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:32,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash 809319584, now seen corresponding path program 1 times [2023-11-29 02:32:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254500638] [2023-11-29 02:32:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 1314 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:32,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:32,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254500638] [2023-11-29 02:32:32,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254500638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:32,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82795811] [2023-11-29 02:32:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:32,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:32,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:32,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:32:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:33,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:33,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2023-11-29 02:32:33,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:33,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82795811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:33,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:33,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 02:32:33,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377146303] [2023-11-29 02:32:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:33,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:33,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:33,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:32:33,330 INFO L87 Difference]: Start difference. First operand 3385 states and 3586 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-11-29 02:32:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:33,734 INFO L93 Difference]: Finished difference Result 7481 states and 7949 transitions. [2023-11-29 02:32:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 789 [2023-11-29 02:32:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:33,748 INFO L225 Difference]: With dead ends: 7481 [2023-11-29 02:32:33,748 INFO L226 Difference]: Without dead ends: 4275 [2023-11-29 02:32:33,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:32:33,751 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 80 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:33,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 24 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2023-11-29 02:32:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4097. [2023-11-29 02:32:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 1.05615234375) internal successors, (4326), 4096 states have internal predecessors, (4326), 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) [2023-11-29 02:32:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 4326 transitions. [2023-11-29 02:32:33,810 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 4326 transitions. Word has length 789 [2023-11-29 02:32:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:33,811 INFO L495 AbstractCegarLoop]: Abstraction has 4097 states and 4326 transitions. [2023-11-29 02:32:33,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-11-29 02:32:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 4326 transitions. [2023-11-29 02:32:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-11-29 02:32:33,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:33,823 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:33,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:32:34,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:32:34,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:34,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1262037527, now seen corresponding path program 1 times [2023-11-29 02:32:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111244659] [2023-11-29 02:32:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1393 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111244659] [2023-11-29 02:32:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111244659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548252322] [2023-11-29 02:32:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:34,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:34,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:34,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:34,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:32:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:34,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:32:34,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1393 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:35,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:32:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1393 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-29 02:32:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548252322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:32:35,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:32:35,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-29 02:32:35,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226665655] [2023-11-29 02:32:35,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:32:35,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:32:35,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:32:35,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:35,434 INFO L87 Difference]: Start difference. First operand 4097 states and 4326 transitions. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 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) [2023-11-29 02:32:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:36,221 INFO L93 Difference]: Finished difference Result 9441 states and 9972 transitions. [2023-11-29 02:32:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:32:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 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 818 [2023-11-29 02:32:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:36,233 INFO L225 Difference]: With dead ends: 9441 [2023-11-29 02:32:36,233 INFO L226 Difference]: Without dead ends: 5523 [2023-11-29 02:32:36,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1634 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:36,237 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:36,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 57 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:32:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-11-29 02:32:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 4809. [2023-11-29 02:32:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0526206322795342) internal successors, (5061), 4808 states have internal predecessors, (5061), 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) [2023-11-29 02:32:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 5061 transitions. [2023-11-29 02:32:36,286 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 5061 transitions. Word has length 818 [2023-11-29 02:32:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:36,287 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 5061 transitions. [2023-11-29 02:32:36,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 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) [2023-11-29 02:32:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 5061 transitions. [2023-11-29 02:32:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2023-11-29 02:32:36,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:36,295 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, 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, 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, 7, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:36,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:32:36,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:32:36,496 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:36,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:36,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1996472289, now seen corresponding path program 1 times [2023-11-29 02:32:36,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:36,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204404725] [2023-11-29 02:32:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:36,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2484 backedges. 1680 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-11-29 02:32:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204404725] [2023-11-29 02:32:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204404725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:37,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:32:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719895318] [2023-11-29 02:32:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:37,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:32:37,361 INFO L87 Difference]: Start difference. First operand 4809 states and 5061 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-11-29 02:32:37,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:37,722 INFO L93 Difference]: Finished difference Result 9795 states and 10339 transitions. [2023-11-29 02:32:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:37,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 880 [2023-11-29 02:32:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:37,731 INFO L225 Difference]: With dead ends: 9795 [2023-11-29 02:32:37,731 INFO L226 Difference]: Without dead ends: 5165 [2023-11-29 02:32:37,735 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 [2023-11-29 02:32:37,736 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:37,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 213 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:32:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-11-29 02:32:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2023-11-29 02:32:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.047443841982959) internal successors, (5409), 5164 states have internal predecessors, (5409), 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) [2023-11-29 02:32:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5409 transitions. [2023-11-29 02:32:37,783 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5409 transitions. Word has length 880 [2023-11-29 02:32:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:37,784 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 5409 transitions. [2023-11-29 02:32:37,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-11-29 02:32:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5409 transitions. [2023-11-29 02:32:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2023-11-29 02:32:37,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:37,791 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, 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, 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, 7, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:37,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:32:37,792 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:37,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash -379311886, now seen corresponding path program 1 times [2023-11-29 02:32:37,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:37,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305235788] [2023-11-29 02:32:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 1671 proven. 93 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-11-29 02:32:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305235788] [2023-11-29 02:32:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305235788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27535023] [2023-11-29 02:32:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:38,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:38,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:38,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:32:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:38,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:32:38,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2023-11-29 02:32:40,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:40,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27535023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:40,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:40,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-29 02:32:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823411286] [2023-11-29 02:32:40,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:40,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:40,708 INFO L87 Difference]: Start difference. First operand 5165 states and 5409 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2023-11-29 02:32:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:41,082 INFO L93 Difference]: Finished difference Result 10329 states and 10820 transitions. [2023-11-29 02:32:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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 898 [2023-11-29 02:32:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:41,089 INFO L225 Difference]: With dead ends: 10329 [2023-11-29 02:32:41,089 INFO L226 Difference]: Without dead ends: 5165 [2023-11-29 02:32:41,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:41,093 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:41,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:32:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-11-29 02:32:41,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2023-11-29 02:32:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0350503485670024) internal successors, (5345), 5164 states have internal predecessors, (5345), 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) [2023-11-29 02:32:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5345 transitions. [2023-11-29 02:32:41,145 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5345 transitions. Word has length 898 [2023-11-29 02:32:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:41,145 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 5345 transitions. [2023-11-29 02:32:41,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2023-11-29 02:32:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5345 transitions. [2023-11-29 02:32:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2023-11-29 02:32:41,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:41,155 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, 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, 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, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:41,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:32:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:32:41,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:41,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1894671483, now seen corresponding path program 1 times [2023-11-29 02:32:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864130816] [2023-11-29 02:32:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:41,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1638 proven. 93 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2023-11-29 02:32:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864130816] [2023-11-29 02:32:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864130816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177754139] [2023-11-29 02:32:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:42,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:42,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:42,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:42,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:32:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:42,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:42,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 2229 trivial. 0 not checked. [2023-11-29 02:32:42,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177754139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:42,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 02:32:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906017319] [2023-11-29 02:32:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:42,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:42,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:42,503 INFO L87 Difference]: Start difference. First operand 5165 states and 5345 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 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) [2023-11-29 02:32:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:42,930 INFO L93 Difference]: Finished difference Result 10151 states and 10510 transitions. [2023-11-29 02:32:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 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 949 [2023-11-29 02:32:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:42,940 INFO L225 Difference]: With dead ends: 10151 [2023-11-29 02:32:42,940 INFO L226 Difference]: Without dead ends: 5165 [2023-11-29 02:32:42,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:42,945 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 148 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:42,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 199 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-11-29 02:32:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4987. [2023-11-29 02:32:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4986 states have (on average 1.0314881668672282) internal successors, (5143), 4986 states have internal predecessors, (5143), 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) [2023-11-29 02:32:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 5143 transitions. [2023-11-29 02:32:43,020 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 5143 transitions. Word has length 949 [2023-11-29 02:32:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:43,021 INFO L495 AbstractCegarLoop]: Abstraction has 4987 states and 5143 transitions. [2023-11-29 02:32:43,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 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) [2023-11-29 02:32:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 5143 transitions. [2023-11-29 02:32:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2023-11-29 02:32:43,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:43,032 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:43,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:32:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:43,233 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:43,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -678722596, now seen corresponding path program 1 times [2023-11-29 02:32:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103038778] [2023-11-29 02:32:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:43,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1846 proven. 93 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-11-29 02:32:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103038778] [2023-11-29 02:32:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103038778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592933019] [2023-11-29 02:32:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:43,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:43,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:32:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:44,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:32:44,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1939 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-11-29 02:32:44,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592933019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:44,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:44,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 02:32:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193648910] [2023-11-29 02:32:44,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:44,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:44,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:44,662 INFO L87 Difference]: Start difference. First operand 4987 states and 5143 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-29 02:32:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:45,067 INFO L93 Difference]: Finished difference Result 9795 states and 10106 transitions. [2023-11-29 02:32:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 954 [2023-11-29 02:32:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:45,074 INFO L225 Difference]: With dead ends: 9795 [2023-11-29 02:32:45,074 INFO L226 Difference]: Without dead ends: 4987 [2023-11-29 02:32:45,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:45,078 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:45,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2023-11-29 02:32:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4809. [2023-11-29 02:32:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0320299500831946) internal successors, (4962), 4808 states have internal predecessors, (4962), 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) [2023-11-29 02:32:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4962 transitions. [2023-11-29 02:32:45,130 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4962 transitions. Word has length 954 [2023-11-29 02:32:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:45,130 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 4962 transitions. [2023-11-29 02:32:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-29 02:32:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4962 transitions. [2023-11-29 02:32:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2023-11-29 02:32:45,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:45,139 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, 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, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 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, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:45,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:32:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:45,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:45,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash -142630243, now seen corresponding path program 1 times [2023-11-29 02:32:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:45,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188458822] [2023-11-29 02:32:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3493 backedges. 2444 proven. 72 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-11-29 02:32:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188458822] [2023-11-29 02:32:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188458822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718387350] [2023-11-29 02:32:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:46,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:46,710 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:46,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:32:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:47,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:32:47,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3493 backedges. 2157 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-11-29 02:32:47,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718387350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-29 02:32:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47593204] [2023-11-29 02:32:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:47,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:32:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:47,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:32:47,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:47,429 INFO L87 Difference]: Start difference. First operand 4809 states and 4962 transitions. Second operand has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2023-11-29 02:32:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:48,033 INFO L93 Difference]: Finished difference Result 9795 states and 10115 transitions. [2023-11-29 02:32:48,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:32:48,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 1031 [2023-11-29 02:32:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:48,040 INFO L225 Difference]: With dead ends: 9795 [2023-11-29 02:32:48,040 INFO L226 Difference]: Without dead ends: 5165 [2023-11-29 02:32:48,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:48,044 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:48,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 39 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:32:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-11-29 02:32:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4987. [2023-11-29 02:32:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4986 states have (on average 1.0312876052948254) internal successors, (5142), 4986 states have internal predecessors, (5142), 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) [2023-11-29 02:32:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 5142 transitions. [2023-11-29 02:32:48,096 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 5142 transitions. Word has length 1031 [2023-11-29 02:32:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:48,096 INFO L495 AbstractCegarLoop]: Abstraction has 4987 states and 5142 transitions. [2023-11-29 02:32:48,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2023-11-29 02:32:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 5142 transitions. [2023-11-29 02:32:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2023-11-29 02:32:48,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:48,105 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 5, 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, 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] [2023-11-29 02:32:48,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:32:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:48,306 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -109247895, now seen corresponding path program 1 times [2023-11-29 02:32:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466852164] [2023-11-29 02:32:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 1891 proven. 7 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2023-11-29 02:32:49,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466852164] [2023-11-29 02:32:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466852164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026855727] [2023-11-29 02:32:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:49,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:49,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:49,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:49,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:32:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:49,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:49,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 1898 proven. 0 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2023-11-29 02:32:49,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026855727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:49,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 02:32:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032440326] [2023-11-29 02:32:49,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:49,680 INFO L87 Difference]: Start difference. First operand 4987 states and 5142 transitions. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-29 02:32:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:50,080 INFO L93 Difference]: Finished difference Result 9973 states and 10283 transitions. [2023-11-29 02:32:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 1033 [2023-11-29 02:32:50,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:50,084 INFO L225 Difference]: With dead ends: 9973 [2023-11-29 02:32:50,084 INFO L226 Difference]: Without dead ends: 5165 [2023-11-29 02:32:50,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:50,088 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:50,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 219 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-11-29 02:32:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4809. [2023-11-29 02:32:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.028910149750416) internal successors, (4947), 4808 states have internal predecessors, (4947), 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) [2023-11-29 02:32:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4947 transitions. [2023-11-29 02:32:50,148 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4947 transitions. Word has length 1033 [2023-11-29 02:32:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:50,148 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 4947 transitions. [2023-11-29 02:32:50,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-29 02:32:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4947 transitions. [2023-11-29 02:32:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1646 [2023-11-29 02:32:50,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:50,165 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:50,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:32:50,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 02:32:50,366 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:50,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1009294722, now seen corresponding path program 1 times [2023-11-29 02:32:50,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:50,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727871493] [2023-11-29 02:32:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:50,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8542 backedges. 4927 proven. 0 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2023-11-29 02:32:52,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:52,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727871493] [2023-11-29 02:32:52,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727871493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:52,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:52,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:32:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123273274] [2023-11-29 02:32:52,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:52,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:32:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:32:52,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:52,833 INFO L87 Difference]: Start difference. First operand 4809 states and 4947 transitions. Second operand has 7 states, 7 states have (on average 92.85714285714286) internal successors, (650), 6 states have internal predecessors, (650), 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) [2023-11-29 02:32:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:53,973 INFO L93 Difference]: Finished difference Result 11770 states and 12136 transitions. [2023-11-29 02:32:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:32:53,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 92.85714285714286) internal successors, (650), 6 states have internal predecessors, (650), 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 1645 [2023-11-29 02:32:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:53,978 INFO L225 Difference]: With dead ends: 11770 [2023-11-29 02:32:53,979 INFO L226 Difference]: Without dead ends: 6591 [2023-11-29 02:32:53,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:32:53,982 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 138 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:53,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 37 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:32:53,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2023-11-29 02:32:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 5877. [2023-11-29 02:32:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.0212729748127978) internal successors, (6001), 5876 states have internal predecessors, (6001), 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) [2023-11-29 02:32:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 6001 transitions. [2023-11-29 02:32:54,033 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 6001 transitions. Word has length 1645 [2023-11-29 02:32:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:54,034 INFO L495 AbstractCegarLoop]: Abstraction has 5877 states and 6001 transitions. [2023-11-29 02:32:54,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.85714285714286) internal successors, (650), 6 states have internal predecessors, (650), 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) [2023-11-29 02:32:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 6001 transitions. [2023-11-29 02:32:54,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1742 [2023-11-29 02:32:54,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:54,052 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:32:54,052 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:54,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 205302102, now seen corresponding path program 1 times [2023-11-29 02:32:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178199008] [2023-11-29 02:32:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:54,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9519 backedges. 2756 proven. 1045 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2023-11-29 02:32:55,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178199008] [2023-11-29 02:32:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178199008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:32:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220124192] [2023-11-29 02:32:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:55,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:32:55,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:32:55,339 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:32:55,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:32:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:55,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:32:55,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:32:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9519 backedges. 3801 proven. 0 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2023-11-29 02:32:56,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:32:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220124192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:56,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:32:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 02:32:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727727409] [2023-11-29 02:32:56,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:32:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:32:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:56,006 INFO L87 Difference]: Start difference. First operand 5877 states and 6001 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-11-29 02:32:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:56,416 INFO L93 Difference]: Finished difference Result 12109 states and 12360 transitions. [2023-11-29 02:32:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:32:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 1741 [2023-11-29 02:32:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:56,420 INFO L225 Difference]: With dead ends: 12109 [2023-11-29 02:32:56,420 INFO L226 Difference]: Without dead ends: 4987 [2023-11-29 02:32:56,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1744 GetRequests, 1740 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:32:56,425 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:56,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:32:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2023-11-29 02:32:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4809. [2023-11-29 02:32:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0162229617304492) internal successors, (4886), 4808 states have internal predecessors, (4886), 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) [2023-11-29 02:32:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4886 transitions. [2023-11-29 02:32:56,473 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4886 transitions. Word has length 1741 [2023-11-29 02:32:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:56,474 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 4886 transitions. [2023-11-29 02:32:56,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-11-29 02:32:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4886 transitions. [2023-11-29 02:32:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1813 [2023-11-29 02:32:56,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:56,511 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:56,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:32:56,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 02:32:56,711 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:56,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 134838252, now seen corresponding path program 1 times [2023-11-29 02:32:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935071267] [2023-11-29 02:32:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:32:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:32:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10875 backedges. 2724 proven. 0 refuted. 0 times theorem prover too weak. 8151 trivial. 0 not checked. [2023-11-29 02:32:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:32:59,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935071267] [2023-11-29 02:32:59,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935071267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:32:59,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:32:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:32:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309409279] [2023-11-29 02:32:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:32:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:32:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:32:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:32:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:59,135 INFO L87 Difference]: Start difference. First operand 4809 states and 4886 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-29 02:32:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:32:59,725 INFO L93 Difference]: Finished difference Result 11219 states and 11417 transitions. [2023-11-29 02:32:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:32:59,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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 1812 [2023-11-29 02:32:59,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:32:59,730 INFO L225 Difference]: With dead ends: 11219 [2023-11-29 02:32:59,730 INFO L226 Difference]: Without dead ends: 6589 [2023-11-29 02:32:59,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:32:59,733 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 234 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:32:59,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 15 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:32:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2023-11-29 02:32:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 5699. [2023-11-29 02:32:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.0175500175500176) internal successors, (5798), 5698 states have internal predecessors, (5798), 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) [2023-11-29 02:32:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 5798 transitions. [2023-11-29 02:32:59,782 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 5798 transitions. Word has length 1812 [2023-11-29 02:32:59,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:32:59,783 INFO L495 AbstractCegarLoop]: Abstraction has 5699 states and 5798 transitions. [2023-11-29 02:32:59,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-29 02:32:59,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 5798 transitions. [2023-11-29 02:32:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2115 [2023-11-29 02:32:59,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:32:59,806 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:32:59,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 02:32:59,807 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:32:59,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:32:59,807 INFO L85 PathProgramCache]: Analyzing trace with hash 174001653, now seen corresponding path program 1 times [2023-11-29 02:32:59,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:32:59,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876490010] [2023-11-29 02:32:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:32:59,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:33:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:33:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14461 backedges. 3142 proven. 0 refuted. 0 times theorem prover too weak. 11319 trivial. 0 not checked. [2023-11-29 02:33:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:33:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876490010] [2023-11-29 02:33:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876490010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:33:02,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:33:02,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:33:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128361590] [2023-11-29 02:33:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:33:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:33:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:33:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:33:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:33:02,635 INFO L87 Difference]: Start difference. First operand 5699 states and 5798 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-11-29 02:33:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:33:03,028 INFO L93 Difference]: Finished difference Result 11219 states and 11405 transitions. [2023-11-29 02:33:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:33:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 2114 [2023-11-29 02:33:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:33:03,032 INFO L225 Difference]: With dead ends: 11219 [2023-11-29 02:33:03,032 INFO L226 Difference]: Without dead ends: 5699 [2023-11-29 02:33:03,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:33:03,035 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 238 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:33:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 8 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:33:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2023-11-29 02:33:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5343. [2023-11-29 02:33:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 5342 states have (on average 1.015350056158742) internal successors, (5424), 5342 states have internal predecessors, (5424), 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) [2023-11-29 02:33:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 5424 transitions. [2023-11-29 02:33:03,101 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 5424 transitions. Word has length 2114 [2023-11-29 02:33:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:33:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 5343 states and 5424 transitions. [2023-11-29 02:33:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-11-29 02:33:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 5424 transitions. [2023-11-29 02:33:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2312 [2023-11-29 02:33:03,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:33:03,130 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 7, 7, 7, 7, 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, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:33:03,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 02:33:03,131 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:33:03,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:33:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -645343085, now seen corresponding path program 1 times [2023-11-29 02:33:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:33:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355431534] [2023-11-29 02:33:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:33:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:33:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:33:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16826 backedges. 3650 proven. 59 refuted. 0 times theorem prover too weak. 13117 trivial. 0 not checked. [2023-11-29 02:33:06,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:33:06,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355431534] [2023-11-29 02:33:06,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355431534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:33:06,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569140108] [2023-11-29 02:33:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:33:06,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:33:06,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:33:06,236 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:33:06,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:33:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:33:06,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:33:06,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:33:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16826 backedges. 2513 proven. 0 refuted. 0 times theorem prover too weak. 14313 trivial. 0 not checked. [2023-11-29 02:33:07,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:33:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569140108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:33:07,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:33:07,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 02:33:07,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678945607] [2023-11-29 02:33:07,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:33:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:33:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:33:07,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:33:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:33:07,241 INFO L87 Difference]: Start difference. First operand 5343 states and 5424 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-11-29 02:33:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:33:07,613 INFO L93 Difference]: Finished difference Result 10329 states and 10489 transitions. [2023-11-29 02:33:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:33:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 2311 [2023-11-29 02:33:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:33:07,618 INFO L225 Difference]: With dead ends: 10329 [2023-11-29 02:33:07,618 INFO L226 Difference]: Without dead ends: 5343 [2023-11-29 02:33:07,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2315 GetRequests, 2311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:33:07,620 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 51 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:33:07,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 203 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:33:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2023-11-29 02:33:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5165. [2023-11-29 02:33:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0133617350890782) internal successors, (5233), 5164 states have internal predecessors, (5233), 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) [2023-11-29 02:33:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5233 transitions. [2023-11-29 02:33:07,665 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5233 transitions. Word has length 2311 [2023-11-29 02:33:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:33:07,666 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 5233 transitions. [2023-11-29 02:33:07,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-11-29 02:33:07,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5233 transitions. [2023-11-29 02:33:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2729 [2023-11-29 02:33:07,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:33:07,712 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 16, 16, 16, 14, 14, 14, 14, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 9, 8, 8, 8, 8, 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, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:33:07,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:33:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:33:07,913 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:33:07,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:33:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1109137865, now seen corresponding path program 1 times [2023-11-29 02:33:07,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:33:07,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942658987] [2023-11-29 02:33:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:33:07,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:33:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:33:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 23424 backedges. 11345 proven. 0 refuted. 0 times theorem prover too weak. 12079 trivial. 0 not checked. [2023-11-29 02:33:10,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:33:10,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942658987] [2023-11-29 02:33:10,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942658987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:33:10,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:33:10,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:33:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165999007] [2023-11-29 02:33:10,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:33:10,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:33:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:33:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:33:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:33:10,511 INFO L87 Difference]: Start difference. First operand 5165 states and 5233 transitions. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 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) [2023-11-29 02:33:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:33:11,263 INFO L93 Difference]: Finished difference Result 9095 states and 9215 transitions. [2023-11-29 02:33:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:33:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 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 2728 [2023-11-29 02:33:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:33:11,265 INFO L225 Difference]: With dead ends: 9095 [2023-11-29 02:33:11,265 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 02:33:11,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:33:11,267 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 160 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:33:11,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 265 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:33:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 02:33:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 02:33:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-29 02:33:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 02:33:11,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2728 [2023-11-29 02:33:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:33:11,268 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:33:11,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 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) [2023-11-29 02:33:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 02:33:11,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 02:33:11,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 02:33:11,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 02:33:11,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2023-11-29 02:33:12,776 INFO L899 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,777 INFO L899 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2023-11-29 02:33:12,778 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,779 INFO L899 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2023-11-29 02:33:12,780 INFO L899 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2023-11-29 02:33:12,781 INFO L899 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2023-11-29 02:33:12,782 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2023-11-29 02:33:12,783 INFO L899 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2023-11-29 02:33:12,784 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,785 INFO L899 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2023-11-29 02:33:12,786 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2023-11-29 02:33:12,787 INFO L899 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L884(lines 884 900) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,788 INFO L899 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,789 INFO L899 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L895 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse11 (<= 81 ~a12~0)) (.cse4 (<= ~a12~0 586307)) (.cse18 (<= (+ ~a12~0 9352) 0)) (.cse17 (<= ~a15~0 6)) (.cse19 (<= ~a12~0 80)) (.cse3 (<= 20 ~a12~0)) (.cse13 (<= 10 ~a21~0)) (.cse10 (= ~a21~0 9)) (.cse9 (+ ~a12~0 42)) (.cse15 (<= ~a12~0 11)) (.cse16 (<= 0 (+ 41 ~a12~0))) (.cse7 (= ~a21~0 8)) (.cse2 (= ~a15~0 9)) (.cse14 (<= ~a12~0 599999)) (.cse12 (<= 95382 ~a12~0)) (.cse6 (<= ~a21~0 6)) (.cse8 (<= ~a15~0 7)) (.cse0 (= ~a24~0 1)) (.cse1 (= 7 ~a21~0)) (.cse5 (<= ~a15~0 8)) (.cse20 (<= (+ 49 ~a12~0) 0))) (or (and (<= 103531 ~a12~0) .cse0 (= 7 ~a15~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse3 .cse6) (and .cse7 .cse0 .cse8 (<= .cse9 0)) (and .cse0 .cse10 .cse2 .cse11 .cse4) (and .cse7 .cse0 .cse2 .cse3 .cse4) (and .cse0 .cse10 .cse8 .cse12) (and (<= (+ ~a12~0 43) 0) .cse0 .cse2 .cse13) (and .cse0 .cse10 .cse2 .cse14 .cse12) (and .cse15 .cse7 .cse0 .cse2 .cse16) (and .cse17 .cse6 .cse18) (and .cse15 .cse0 .cse5 .cse13) (and .cse0 .cse5 .cse3 .cse13) (and .cse0 .cse2 .cse13 .cse14 .cse11) (and .cse0 .cse2 .cse4 .cse12) (and .cse19 .cse0 .cse10 .cse8 .cse16) (and .cse0 .cse1 .cse2 .cse14 .cse12) (and .cse7 .cse0 .cse2 .cse18) (and .cse0 .cse8 .cse13) (and (or (and .cse0 .cse17) (and .cse17 .cse20)) (<= ~a24~0 1)) (and .cse7 (<= ~a12~0 73282) .cse0 .cse3 (= ~a15~0 8)) (and .cse19 .cse0 .cse5 .cse10 .cse3) (and .cse15 .cse0 .cse2 .cse13 .cse16) (and .cse15 .cse0 .cse5 .cse10 (<= 0 .cse9)) (and .cse15 .cse0 .cse5 .cse16) (and .cse7 .cse0 .cse2 .cse14 .cse12) (and .cse0 .cse1 .cse8) (and .cse0 .cse6 .cse8 .cse20) (and .cse0 .cse1 .cse5 .cse20))) [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,790 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2023-11-29 02:33:12,791 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2023-11-29 02:33:12,793 INFO L445 BasicCegarLoop]: Path program 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] [2023-11-29 02:33:12,795 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:33:12,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:33:12 BoogieIcfgContainer [2023-11-29 02:33:12,811 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:33:12,811 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:33:12,812 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:33:12,812 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:33:12,812 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:32:14" (3/4) ... [2023-11-29 02:33:12,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 02:33:12,835 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-29 02:33:12,837 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 02:33:12,839 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 02:33:12,841 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 02:33:13,024 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:33:13,025 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 02:33:13,025 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:33:13,025 INFO L158 Benchmark]: Toolchain (without parser) took 60866.55ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 111.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 139.4MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,026 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:33:13,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.78ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 77.6MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.96ms. Allocated memory is still 151.0MB. Free memory was 77.6MB in the beginning and 67.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,027 INFO L158 Benchmark]: Boogie Preprocessor took 148.29ms. Allocated memory is still 151.0MB. Free memory was 67.9MB in the beginning and 113.1MB in the end (delta: -45.2MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,027 INFO L158 Benchmark]: RCFGBuilder took 1287.69ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 112.1MB in the beginning and 122.7MB in the end (delta: -10.5MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,027 INFO L158 Benchmark]: TraceAbstraction took 58554.28ms. Allocated memory was 211.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 122.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 797.3MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,028 INFO L158 Benchmark]: Witness Printer took 213.40ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 02:33:13,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.78ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 77.6MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.96ms. Allocated memory is still 151.0MB. Free memory was 77.6MB in the beginning and 67.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 148.29ms. Allocated memory is still 151.0MB. Free memory was 67.9MB in the beginning and 113.1MB in the end (delta: -45.2MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * RCFGBuilder took 1287.69ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 112.1MB in the beginning and 122.7MB in the end (delta: -10.5MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * TraceAbstraction took 58554.28ms. Allocated memory was 211.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 122.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 797.3MB. Max. memory is 16.1GB. * Witness Printer took 213.40ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 119]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.5s, OverallIterations: 28, TraceHistogramMax: 22, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3034 SdHoareTripleChecker+Valid, 14.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3034 mSDsluCounter, 3543 SdHoareTripleChecker+Invalid, 12.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 1215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15867 IncrementalHoareTripleChecker+Invalid, 17082 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1215 mSolverCounterUnsat, 3327 mSDtfsCounter, 15867 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13665 GetRequests, 13580 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5877occurred in iteration=23, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 6590 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 48 NumberOfFragments, 435 HoareAnnotationTreeSize, 1 FomulaSimplifications, 5220 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 1 FomulaSimplificationsInter, 972 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 29.2s InterpolantComputationTime, 36901 NumberOfCodeBlocks, 36901 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 37676 ConstructedInterpolants, 0 QuantifiedInterpolants, 101083 SizeOfPredicates, 0 NumberOfNonLiveVariables, 15701 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 43 InterpolantComputations, 27 PerfectInterpolantSequences, 160550/163025 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((103531 <= a12) && (a24 == 1)) && (7 == a15)) || (((((a24 == 1) && (7 == a21)) && (a15 == 9)) && (20 <= a12)) && (a12 <= 586307))) || ((((a24 == 1) && (a15 <= 8)) && (20 <= a12)) && (a21 <= 6))) || ((((a21 == 8) && (a24 == 1)) && (a15 <= 7)) && ((a12 + 42) <= 0))) || (((((a24 == 1) && (a21 == 9)) && (a15 == 9)) && (81 <= a12)) && (a12 <= 586307))) || (((((a21 == 8) && (a24 == 1)) && (a15 == 9)) && (20 <= a12)) && (a12 <= 586307))) || ((((a24 == 1) && (a21 == 9)) && (a15 <= 7)) && (95382 <= a12))) || (((((a12 + 43) <= 0) && (a24 == 1)) && (a15 == 9)) && (10 <= a21))) || (((((a24 == 1) && (a21 == 9)) && (a15 == 9)) && (a12 <= 599999)) && (95382 <= a12))) || (((((a12 <= 11) && (a21 == 8)) && (a24 == 1)) && (a15 == 9)) && (0 <= (41 + a12)))) || (((a15 <= 6) && (a21 <= 6)) && ((a12 + 9352) <= 0))) || ((((a12 <= 11) && (a24 == 1)) && (a15 <= 8)) && (10 <= a21))) || ((((a24 == 1) && (a15 <= 8)) && (20 <= a12)) && (10 <= a21))) || (((((a24 == 1) && (a15 == 9)) && (10 <= a21)) && (a12 <= 599999)) && (81 <= a12))) || ((((a24 == 1) && (a15 == 9)) && (a12 <= 586307)) && (95382 <= a12))) || (((((a12 <= 80) && (a24 == 1)) && (a21 == 9)) && (a15 <= 7)) && (0 <= (41 + a12)))) || (((((a24 == 1) && (7 == a21)) && (a15 == 9)) && (a12 <= 599999)) && (95382 <= a12))) || ((((a21 == 8) && (a24 == 1)) && (a15 == 9)) && ((a12 + 9352) <= 0))) || (((a24 == 1) && (a15 <= 7)) && (10 <= a21))) || ((((a24 == 1) && (a15 <= 6)) || ((a15 <= 6) && ((49 + a12) <= 0))) && (a24 <= 1))) || (((((a21 == 8) && (a12 <= 73282)) && (a24 == 1)) && (20 <= a12)) && (a15 == 8))) || (((((a12 <= 80) && (a24 == 1)) && (a15 <= 8)) && (a21 == 9)) && (20 <= a12))) || (((((a12 <= 11) && (a24 == 1)) && (a15 == 9)) && (10 <= a21)) && (0 <= (41 + a12)))) || (((((a12 <= 11) && (a24 == 1)) && (a15 <= 8)) && (a21 == 9)) && (0 <= (a12 + 42)))) || ((((a12 <= 11) && (a24 == 1)) && (a15 <= 8)) && (0 <= (41 + a12)))) || (((((a21 == 8) && (a24 == 1)) && (a15 == 9)) && (a12 <= 599999)) && (95382 <= a12))) || (((a24 == 1) && (7 == a21)) && (a15 <= 7))) || ((((a24 == 1) && (a21 <= 6)) && (a15 <= 7)) && ((49 + a12) <= 0))) || ((((a24 == 1) && (7 == a21)) && (a15 <= 8)) && ((49 + a12) <= 0))) RESULT: Ultimate proved your program to be correct! [2023-11-29 02:33:13,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17817b3-8565-46f5-9edf-e3261fc7396e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE