./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/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_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/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 64bit --witnessprinter.graph.data.programhash 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:00:47,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:00:47,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 00:00:47,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:00:47,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:00:47,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:00:47,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:00:47,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:00:47,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:00:47,271 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:00:47,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:00:47,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:00:47,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:00:47,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:00:47,274 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:00:47,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:00:47,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:00:47,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:00:47,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:00:47,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:00:47,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:00:47,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:00:47,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:00:47,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:00:47,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:00:47,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:00:47,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:00:47,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:00:47,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:00:47,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:00:47,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:00:47,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:00:47,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:00:47,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:00:47,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:00:47,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:00:47,283 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:00:47,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:00:47,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:00:47,283 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_88d52a3d-8950-4e0b-ab59-47cf83f5150d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef [2023-11-29 00:00:47,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:00:47,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:00:47,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:00:47,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:00:47,543 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:00:47,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2023-11-29 00:00:50,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:00:50,431 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:00:50,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2023-11-29 00:00:50,442 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/data/8e877d43e/0f1457f303ed4947854701784a42fdfd/FLAG367c7334d [2023-11-29 00:00:50,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/data/8e877d43e/0f1457f303ed4947854701784a42fdfd [2023-11-29 00:00:50,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:00:50,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:00:50,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:00:50,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:00:50,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:00:50,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:50,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa4f161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50, skipping insertion in model container [2023-11-29 00:00:50,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:50,504 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:00:50,636 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_88d52a3d-8950-4e0b-ab59-47cf83f5150d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2023-11-29 00:00:50,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:00:50,762 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:00:50,774 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_88d52a3d-8950-4e0b-ab59-47cf83f5150d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2023-11-29 00:00:50,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:00:50,855 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:00:50,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50 WrapperNode [2023-11-29 00:00:50,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:00:50,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:00:50,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:00:50,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:00:50,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:50,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:50,973 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 816 [2023-11-29 00:00:50,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:00:50,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:00:50,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:00:50,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:00:50,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:50,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,032 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 00:00:51,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:00:51,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:00:51,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:00:51,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:00:51,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (1/1) ... [2023-11-29 00:00:51,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:00:51,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:00:51,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:00:51,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:00:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:00:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:00:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:00:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:00:51,357 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:00:51,359 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:00:52,011 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:00:52,042 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:00:52,042 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:00:52,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:00:52 BoogieIcfgContainer [2023-11-29 00:00:52,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:00:52,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:00:52,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:00:52,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:00:52,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:00:50" (1/3) ... [2023-11-29 00:00:52,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72261162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:00:52, skipping insertion in model container [2023-11-29 00:00:52,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:50" (2/3) ... [2023-11-29 00:00:52,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72261162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:00:52, skipping insertion in model container [2023-11-29 00:00:52,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:00:52" (3/3) ... [2023-11-29 00:00:52,050 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2023-11-29 00:00:52,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:00:52,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:00:52,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:00:52,126 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;@28fb214e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:00:52,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:00:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 106 states have internal predecessors, (175), 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 00:00:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:00:52,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:52,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:52,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:52,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash -323497386, now seen corresponding path program 1 times [2023-11-29 00:00:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327590348] [2023-11-29 00:00:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:52,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:52,605 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 00:00:52,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327590348] [2023-11-29 00:00:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327590348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371347163] [2023-11-29 00:00:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:52,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:00:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:00:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:00:52,641 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 106 states have internal predecessors, (175), 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 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 00:00:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:52,694 INFO L93 Difference]: Finished difference Result 174 states and 286 transitions. [2023-11-29 00:00:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:00:52,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2023-11-29 00:00:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:52,706 INFO L225 Difference]: With dead ends: 174 [2023-11-29 00:00:52,706 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 00:00:52,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:00:52,711 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:52,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 499 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:00:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 00:00:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-29 00:00:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.6320754716981132) internal successors, (173), 106 states have internal predecessors, (173), 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 00:00:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 173 transitions. [2023-11-29 00:00:52,747 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 173 transitions. Word has length 40 [2023-11-29 00:00:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:52,748 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 173 transitions. [2023-11-29 00:00:52,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 00:00:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 173 transitions. [2023-11-29 00:00:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 00:00:52,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:52,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:52,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:00:52,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:52,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1436699628, now seen corresponding path program 1 times [2023-11-29 00:00:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:52,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403000013] [2023-11-29 00:00:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:52,905 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 00:00:52,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403000013] [2023-11-29 00:00:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403000013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89919807] [2023-11-29 00:00:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:52,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:00:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:00:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:00:52,909 INFO L87 Difference]: Start difference. First operand 107 states and 173 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 00:00:52,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:52,944 INFO L93 Difference]: Finished difference Result 177 states and 284 transitions. [2023-11-29 00:00:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:00:52,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2023-11-29 00:00:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:52,946 INFO L225 Difference]: With dead ends: 177 [2023-11-29 00:00:52,946 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 00:00:52,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:00:52,949 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:52,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 497 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:00:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 00:00:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2023-11-29 00:00:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 108 states have internal predecessors, (175), 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 00:00:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 175 transitions. [2023-11-29 00:00:52,960 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 175 transitions. Word has length 41 [2023-11-29 00:00:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:52,961 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 175 transitions. [2023-11-29 00:00:52,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 00:00:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 175 transitions. [2023-11-29 00:00:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 00:00:52,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:52,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:52,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:00:52,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:52,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1800235218, now seen corresponding path program 1 times [2023-11-29 00:00:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:52,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934437351] [2023-11-29 00:00:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:53,366 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 00:00:53,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:53,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934437351] [2023-11-29 00:00:53,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934437351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:53,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:53,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811082151] [2023-11-29 00:00:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:00:53,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:00:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:00:53,369 INFO L87 Difference]: Start difference. First operand 109 states and 175 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 00:00:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:53,420 INFO L93 Difference]: Finished difference Result 185 states and 295 transitions. [2023-11-29 00:00:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:00:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2023-11-29 00:00:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:53,423 INFO L225 Difference]: With dead ends: 185 [2023-11-29 00:00:53,423 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 00:00:53,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:00:53,425 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 205 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:53,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 320 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:00:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 00:00:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2023-11-29 00:00:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.6111111111111112) internal successors, (174), 108 states have internal predecessors, (174), 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 00:00:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 174 transitions. [2023-11-29 00:00:53,434 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 174 transitions. Word has length 42 [2023-11-29 00:00:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:53,434 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 174 transitions. [2023-11-29 00:00:53,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 00:00:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 174 transitions. [2023-11-29 00:00:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 00:00:53,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:53,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:53,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:00:53,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:53,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1625402618, now seen corresponding path program 1 times [2023-11-29 00:00:53,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:53,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228766665] [2023-11-29 00:00:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:53,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:53,873 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 00:00:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228766665] [2023-11-29 00:00:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228766665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:53,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:53,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:00:53,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393261315] [2023-11-29 00:00:53,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:00:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:53,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:00:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:00:53,877 INFO L87 Difference]: Start difference. First operand 109 states and 174 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 00:00:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:54,209 INFO L93 Difference]: Finished difference Result 325 states and 511 transitions. [2023-11-29 00:00:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:00:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2023-11-29 00:00:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:54,212 INFO L225 Difference]: With dead ends: 325 [2023-11-29 00:00:54,213 INFO L226 Difference]: Without dead ends: 256 [2023-11-29 00:00:54,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:00:54,215 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 819 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:54,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1009 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:00:54,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-29 00:00:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 117. [2023-11-29 00:00:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.5948275862068966) internal successors, (185), 116 states have internal predecessors, (185), 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 00:00:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 185 transitions. [2023-11-29 00:00:54,226 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 185 transitions. Word has length 43 [2023-11-29 00:00:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:54,227 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 185 transitions. [2023-11-29 00:00:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 00:00:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 185 transitions. [2023-11-29 00:00:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 00:00:54,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:54,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:54,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:00:54,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:54,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1232375608, now seen corresponding path program 1 times [2023-11-29 00:00:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:54,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824420462] [2023-11-29 00:00:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:54,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:54,846 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 00:00:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:54,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824420462] [2023-11-29 00:00:54,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824420462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:54,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:54,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:00:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787522387] [2023-11-29 00:00:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:00:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:00:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:00:54,849 INFO L87 Difference]: Start difference. First operand 117 states and 185 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 00:00:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:55,303 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2023-11-29 00:00:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:00:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2023-11-29 00:00:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:55,305 INFO L225 Difference]: With dead ends: 272 [2023-11-29 00:00:55,305 INFO L226 Difference]: Without dead ends: 195 [2023-11-29 00:00:55,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:00:55,307 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 556 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:55,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 924 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:00:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-29 00:00:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2023-11-29 00:00:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.588235294117647) internal successors, (189), 119 states have internal predecessors, (189), 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 00:00:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 189 transitions. [2023-11-29 00:00:55,315 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 189 transitions. Word has length 43 [2023-11-29 00:00:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:55,316 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 189 transitions. [2023-11-29 00:00:55,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 00:00:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 189 transitions. [2023-11-29 00:00:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 00:00:55,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:55,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:00:55,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:55,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1287584326, now seen corresponding path program 1 times [2023-11-29 00:00:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845097965] [2023-11-29 00:00:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:55,667 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 00:00:55,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:55,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845097965] [2023-11-29 00:00:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845097965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:55,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:55,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:55,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749837005] [2023-11-29 00:00:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:55,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:00:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:00:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:00:55,670 INFO L87 Difference]: Start difference. First operand 120 states and 189 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 00:00:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:55,753 INFO L93 Difference]: Finished difference Result 281 states and 435 transitions. [2023-11-29 00:00:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:00:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2023-11-29 00:00:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:55,755 INFO L225 Difference]: With dead ends: 281 [2023-11-29 00:00:55,755 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 00:00:55,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:00:55,757 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 326 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:55,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 517 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:00:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 00:00:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 126. [2023-11-29 00:00:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.56) internal successors, (195), 125 states have internal predecessors, (195), 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 00:00:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 195 transitions. [2023-11-29 00:00:55,764 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 195 transitions. Word has length 43 [2023-11-29 00:00:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:55,765 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 195 transitions. [2023-11-29 00:00:55,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 00:00:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 195 transitions. [2023-11-29 00:00:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 00:00:55,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:55,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:55,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:00:55,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:55,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1739876872, now seen corresponding path program 1 times [2023-11-29 00:00:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124510373] [2023-11-29 00:00:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:55,908 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 00:00:55,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:55,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124510373] [2023-11-29 00:00:55,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124510373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:55,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:55,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145125030] [2023-11-29 00:00:55,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:55,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:00:55,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:00:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:00:55,911 INFO L87 Difference]: Start difference. First operand 126 states and 195 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 00:00:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:56,011 INFO L93 Difference]: Finished difference Result 287 states and 437 transitions. [2023-11-29 00:00:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:00:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2023-11-29 00:00:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:56,013 INFO L225 Difference]: With dead ends: 287 [2023-11-29 00:00:56,013 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 00:00:56,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:00:56,015 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 342 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:56,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 472 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:00:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 00:00:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 133. [2023-11-29 00:00:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5454545454545454) internal successors, (204), 132 states have internal predecessors, (204), 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 00:00:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 204 transitions. [2023-11-29 00:00:56,023 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 204 transitions. Word has length 44 [2023-11-29 00:00:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:56,023 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 204 transitions. [2023-11-29 00:00:56,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 00:00:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 204 transitions. [2023-11-29 00:00:56,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 00:00:56,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:56,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:00:56,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:56,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:56,025 INFO L85 PathProgramCache]: Analyzing trace with hash 316532708, now seen corresponding path program 1 times [2023-11-29 00:00:56,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46538768] [2023-11-29 00:00:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:56,168 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 00:00:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46538768] [2023-11-29 00:00:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46538768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956323387] [2023-11-29 00:00:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:00:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:00:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:00:56,170 INFO L87 Difference]: Start difference. First operand 133 states and 204 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 00:00:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:56,267 INFO L93 Difference]: Finished difference Result 274 states and 418 transitions. [2023-11-29 00:00:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:00:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2023-11-29 00:00:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:56,269 INFO L225 Difference]: With dead ends: 274 [2023-11-29 00:00:56,269 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 00:00:56,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:00:56,271 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 322 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:56,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 469 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:00:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 00:00:56,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 130. [2023-11-29 00:00:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.5426356589147288) internal successors, (199), 129 states have internal predecessors, (199), 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 00:00:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 199 transitions. [2023-11-29 00:00:56,278 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 199 transitions. Word has length 44 [2023-11-29 00:00:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:56,278 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 199 transitions. [2023-11-29 00:00:56,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 00:00:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 199 transitions. [2023-11-29 00:00:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 00:00:56,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:56,280 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:00:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:00:56,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:56,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1309275010, now seen corresponding path program 1 times [2023-11-29 00:00:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360668055] [2023-11-29 00:00:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:57,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:57,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360668055] [2023-11-29 00:00:57,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360668055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:00:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333217250] [2023-11-29 00:00:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:57,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:00:57,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:00:57,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:00:57,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:00:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:58,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:00:58,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:00:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:58,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:00:58,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333217250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:58,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:00:58,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2023-11-29 00:00:58,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266094824] [2023-11-29 00:00:58,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:58,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:00:58,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:58,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:00:58,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:00:58,567 INFO L87 Difference]: Start difference. First operand 130 states and 199 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 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 00:00:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:00:59,095 INFO L93 Difference]: Finished difference Result 271 states and 413 transitions. [2023-11-29 00:00:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:00:59,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 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 88 [2023-11-29 00:00:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:00:59,100 INFO L225 Difference]: With dead ends: 271 [2023-11-29 00:00:59,100 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 00:00:59,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:00:59,101 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 281 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:00:59,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 202 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:00:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 00:00:59,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 151. [2023-11-29 00:00:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5066666666666666) internal successors, (226), 150 states have internal predecessors, (226), 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 00:00:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 226 transitions. [2023-11-29 00:00:59,110 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 226 transitions. Word has length 88 [2023-11-29 00:00:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:00:59,110 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 226 transitions. [2023-11-29 00:00:59,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 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 00:00:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 226 transitions. [2023-11-29 00:00:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 00:00:59,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:00:59,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:59,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:00:59,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:00:59,312 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:00:59,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash 727336104, now seen corresponding path program 1 times [2023-11-29 00:00:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:59,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421973752] [2023-11-29 00:00:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421973752] [2023-11-29 00:01:00,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421973752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:00,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:00,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:01:00,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738291175] [2023-11-29 00:01:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:00,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:01:00,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:01:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:01:00,459 INFO L87 Difference]: Start difference. First operand 151 states and 226 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 00:01:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:00,964 INFO L93 Difference]: Finished difference Result 279 states and 422 transitions. [2023-11-29 00:01:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:01:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 89 [2023-11-29 00:01:00,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:00,966 INFO L225 Difference]: With dead ends: 279 [2023-11-29 00:01:00,966 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 00:01:00,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:01:00,967 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 296 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:00,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 370 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:01:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 00:01:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 165. [2023-11-29 00:01:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 164 states have internal predecessors, (248), 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 00:01:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2023-11-29 00:01:00,978 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 89 [2023-11-29 00:01:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:00,978 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2023-11-29 00:01:00,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 00:01:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2023-11-29 00:01:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 00:01:00,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:00,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:01:00,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:01:00,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:00,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 490902716, now seen corresponding path program 1 times [2023-11-29 00:01:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:00,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875296467] [2023-11-29 00:01:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875296467] [2023-11-29 00:01:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875296467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:02,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:01:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608424666] [2023-11-29 00:01:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:01:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:01:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:01:02,024 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 00:01:02,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:02,374 INFO L93 Difference]: Finished difference Result 296 states and 447 transitions. [2023-11-29 00:01:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:01:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 90 [2023-11-29 00:01:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:02,376 INFO L225 Difference]: With dead ends: 296 [2023-11-29 00:01:02,376 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 00:01:02,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:01:02,377 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 325 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:02,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 515 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:01:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 00:01:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2023-11-29 00:01:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5060975609756098) internal successors, (247), 164 states have internal predecessors, (247), 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 00:01:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2023-11-29 00:01:02,382 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 90 [2023-11-29 00:01:02,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:02,382 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2023-11-29 00:01:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 00:01:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2023-11-29 00:01:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:01:02,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:02,384 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:01:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:01:02,384 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:02,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash 546996, now seen corresponding path program 1 times [2023-11-29 00:01:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:02,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753980630] [2023-11-29 00:01:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753980630] [2023-11-29 00:01:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753980630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:03,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:03,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:01:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897349244] [2023-11-29 00:01:03,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:03,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:01:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:01:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:01:03,048 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 00:01:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:03,419 INFO L93 Difference]: Finished difference Result 294 states and 444 transitions. [2023-11-29 00:01:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:01:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 91 [2023-11-29 00:01:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:03,421 INFO L225 Difference]: With dead ends: 294 [2023-11-29 00:01:03,421 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 00:01:03,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:01:03,422 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 299 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:03,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 150 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:01:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 00:01:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2023-11-29 00:01:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 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 00:01:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 246 transitions. [2023-11-29 00:01:03,428 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 246 transitions. Word has length 91 [2023-11-29 00:01:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 246 transitions. [2023-11-29 00:01:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 00:01:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 246 transitions. [2023-11-29 00:01:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:01:03,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:03,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:01:03,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:01:03,430 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:03,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -14971722, now seen corresponding path program 1 times [2023-11-29 00:01:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738219670] [2023-11-29 00:01:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:04,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738219670] [2023-11-29 00:01:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738219670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:01:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000371950] [2023-11-29 00:01:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:04,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:01:04,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:01:04,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:01:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:05,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:01:05,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:05,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:01:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000371950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:05,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:01:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-11-29 00:01:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378721383] [2023-11-29 00:01:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:05,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:01:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:01:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:01:05,410 INFO L87 Difference]: Start difference. First operand 165 states and 246 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 00:01:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:06,556 INFO L93 Difference]: Finished difference Result 426 states and 651 transitions. [2023-11-29 00:01:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:01:06,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 91 [2023-11-29 00:01:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:06,559 INFO L225 Difference]: With dead ends: 426 [2023-11-29 00:01:06,559 INFO L226 Difference]: Without dead ends: 340 [2023-11-29 00:01:06,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:01:06,561 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 652 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:06,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 503 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:01:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-29 00:01:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 225. [2023-11-29 00:01:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5178571428571428) internal successors, (340), 224 states have internal predecessors, (340), 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 00:01:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 340 transitions. [2023-11-29 00:01:06,571 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 340 transitions. Word has length 91 [2023-11-29 00:01:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:06,572 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 340 transitions. [2023-11-29 00:01:06,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 00:01:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 340 transitions. [2023-11-29 00:01:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:01:06,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:06,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:01:06,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:01:06,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:06,774 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:06,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1438315886, now seen corresponding path program 1 times [2023-11-29 00:01:06,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:06,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680322200] [2023-11-29 00:01:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:06,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:08,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680322200] [2023-11-29 00:01:08,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680322200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:08,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:01:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155319560] [2023-11-29 00:01:08,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:01:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:01:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:01:08,400 INFO L87 Difference]: Start difference. First operand 225 states and 340 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 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 00:01:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:09,104 INFO L93 Difference]: Finished difference Result 418 states and 630 transitions. [2023-11-29 00:01:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:01:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 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 91 [2023-11-29 00:01:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:09,107 INFO L225 Difference]: With dead ends: 418 [2023-11-29 00:01:09,107 INFO L226 Difference]: Without dead ends: 274 [2023-11-29 00:01:09,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:01:09,108 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 522 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:09,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 622 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:01:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-29 00:01:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 208. [2023-11-29 00:01:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5169082125603865) internal successors, (314), 207 states have internal predecessors, (314), 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 00:01:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 314 transitions. [2023-11-29 00:01:09,117 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 314 transitions. Word has length 91 [2023-11-29 00:01:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:09,118 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 314 transitions. [2023-11-29 00:01:09,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 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 00:01:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 314 transitions. [2023-11-29 00:01:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 00:01:09,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:09,119 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:01:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:01:09,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:09,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash -414823866, now seen corresponding path program 1 times [2023-11-29 00:01:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211222161] [2023-11-29 00:01:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211222161] [2023-11-29 00:01:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211222161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:01:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042575770] [2023-11-29 00:01:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:10,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:01:10,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:01:10,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:01:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:10,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 00:01:10,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:11,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:01:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042575770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:01:12,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:01:12,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 16] total 35 [2023-11-29 00:01:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543561225] [2023-11-29 00:01:12,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:01:12,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 00:01:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 00:01:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:01:12,610 INFO L87 Difference]: Start difference. First operand 208 states and 314 transitions. Second operand has 36 states, 36 states have (on average 7.027777777777778) internal successors, (253), 35 states have internal predecessors, (253), 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 00:01:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:18,334 INFO L93 Difference]: Finished difference Result 883 states and 1381 transitions. [2023-11-29 00:01:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 00:01:18,335 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.027777777777778) internal successors, (253), 35 states have internal predecessors, (253), 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 92 [2023-11-29 00:01:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:18,339 INFO L225 Difference]: With dead ends: 883 [2023-11-29 00:01:18,339 INFO L226 Difference]: Without dead ends: 756 [2023-11-29 00:01:18,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1212, Invalid=4950, Unknown=0, NotChecked=0, Total=6162 [2023-11-29 00:01:18,342 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2657 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:18,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2657 Valid, 1376 Invalid, 5435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 00:01:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-29 00:01:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 277. [2023-11-29 00:01:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5253623188405796) internal successors, (421), 276 states have internal predecessors, (421), 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 00:01:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 421 transitions. [2023-11-29 00:01:18,363 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 421 transitions. Word has length 92 [2023-11-29 00:01:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:18,363 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 421 transitions. [2023-11-29 00:01:18,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.027777777777778) internal successors, (253), 35 states have internal predecessors, (253), 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 00:01:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 421 transitions. [2023-11-29 00:01:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 00:01:18,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:18,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:01:18,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:01:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:18,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:18,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1838168030, now seen corresponding path program 1 times [2023-11-29 00:01:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624045760] [2023-11-29 00:01:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:19,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:19,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624045760] [2023-11-29 00:01:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624045760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:01:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726133112] [2023-11-29 00:01:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:19,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:19,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:01:19,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:01:19,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:01:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:19,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 00:01:19,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:20,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:01:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:21,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726133112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:01:21,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:01:21,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 28 [2023-11-29 00:01:21,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291929719] [2023-11-29 00:01:21,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:01:21,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:01:21,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:21,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:01:21,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:01:21,458 INFO L87 Difference]: Start difference. First operand 277 states and 421 transitions. Second operand has 29 states, 29 states have (on average 9.310344827586206) internal successors, (270), 28 states have internal predecessors, (270), 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 00:01:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:22,783 INFO L93 Difference]: Finished difference Result 550 states and 846 transitions. [2023-11-29 00:01:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:01:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.310344827586206) internal successors, (270), 28 states have internal predecessors, (270), 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 92 [2023-11-29 00:01:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:22,786 INFO L225 Difference]: With dead ends: 550 [2023-11-29 00:01:22,786 INFO L226 Difference]: Without dead ends: 335 [2023-11-29 00:01:22,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 00:01:22,787 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1923 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:22,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 611 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:01:22,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-29 00:01:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 237. [2023-11-29 00:01:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.5084745762711864) internal successors, (356), 236 states have internal predecessors, (356), 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 00:01:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 356 transitions. [2023-11-29 00:01:22,800 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 356 transitions. Word has length 92 [2023-11-29 00:01:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:22,800 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 356 transitions. [2023-11-29 00:01:22,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.310344827586206) internal successors, (270), 28 states have internal predecessors, (270), 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 00:01:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 356 transitions. [2023-11-29 00:01:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 00:01:22,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:22,802 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:22,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:01:23,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:01:23,003 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:23,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:23,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1985947356, now seen corresponding path program 1 times [2023-11-29 00:01:23,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:23,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942954158] [2023-11-29 00:01:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:23,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:24,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:24,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942954158] [2023-11-29 00:01:24,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942954158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:24,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:01:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646115307] [2023-11-29 00:01:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:24,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:01:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:01:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:01:24,724 INFO L87 Difference]: Start difference. First operand 237 states and 356 transitions. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 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 00:01:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:25,401 INFO L93 Difference]: Finished difference Result 730 states and 1110 transitions. [2023-11-29 00:01:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:01:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 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 136 [2023-11-29 00:01:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:25,405 INFO L225 Difference]: With dead ends: 730 [2023-11-29 00:01:25,405 INFO L226 Difference]: Without dead ends: 599 [2023-11-29 00:01:25,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:01:25,406 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 593 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:25,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 527 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:01:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-11-29 00:01:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 376. [2023-11-29 00:01:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.5066666666666666) internal successors, (565), 375 states have internal predecessors, (565), 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 00:01:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 565 transitions. [2023-11-29 00:01:25,427 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 565 transitions. Word has length 136 [2023-11-29 00:01:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:25,427 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 565 transitions. [2023-11-29 00:01:25,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 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 00:01:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 565 transitions. [2023-11-29 00:01:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 00:01:25,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:25,430 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:01:25,430 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:25,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 605585284, now seen corresponding path program 1 times [2023-11-29 00:01:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390953501] [2023-11-29 00:01:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:26,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390953501] [2023-11-29 00:01:26,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390953501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:26,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:01:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586185892] [2023-11-29 00:01:26,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:26,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:01:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:01:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:01:26,974 INFO L87 Difference]: Start difference. First operand 376 states and 565 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 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 00:01:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:27,586 INFO L93 Difference]: Finished difference Result 1098 states and 1664 transitions. [2023-11-29 00:01:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:01:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 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 137 [2023-11-29 00:01:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:27,591 INFO L225 Difference]: With dead ends: 1098 [2023-11-29 00:01:27,591 INFO L226 Difference]: Without dead ends: 842 [2023-11-29 00:01:27,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:01:27,592 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 410 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:27,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 439 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:01:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-11-29 00:01:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 442. [2023-11-29 00:01:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.4671201814058956) internal successors, (647), 441 states have internal predecessors, (647), 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 00:01:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 647 transitions. [2023-11-29 00:01:27,622 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 647 transitions. Word has length 137 [2023-11-29 00:01:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:27,622 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 647 transitions. [2023-11-29 00:01:27,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 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 00:01:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 647 transitions. [2023-11-29 00:01:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 00:01:27,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:27,625 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:01:27,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:01:27,625 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:27,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2087874316, now seen corresponding path program 1 times [2023-11-29 00:01:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:27,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10100824] [2023-11-29 00:01:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:27,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:29,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10100824] [2023-11-29 00:01:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10100824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:29,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:29,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:01:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820078878] [2023-11-29 00:01:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:29,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:01:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:01:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:01:29,830 INFO L87 Difference]: Start difference. First operand 442 states and 647 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 10 states have internal predecessors, (138), 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 00:01:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:31,204 INFO L93 Difference]: Finished difference Result 1890 states and 2783 transitions. [2023-11-29 00:01:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:01:31,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 10 states have internal predecessors, (138), 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 138 [2023-11-29 00:01:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:31,213 INFO L225 Difference]: With dead ends: 1890 [2023-11-29 00:01:31,214 INFO L226 Difference]: Without dead ends: 1578 [2023-11-29 00:01:31,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:01:31,215 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 680 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 833 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:01:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-11-29 00:01:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 749. [2023-11-29 00:01:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.4491978609625669) internal successors, (1084), 748 states have internal predecessors, (1084), 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 00:01:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1084 transitions. [2023-11-29 00:01:31,281 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1084 transitions. Word has length 138 [2023-11-29 00:01:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:31,281 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1084 transitions. [2023-11-29 00:01:31,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 10 states have internal predecessors, (138), 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 00:01:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1084 transitions. [2023-11-29 00:01:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 00:01:31,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:31,285 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:31,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:01:31,285 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:31,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -267930934, now seen corresponding path program 1 times [2023-11-29 00:01:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185910434] [2023-11-29 00:01:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:33,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185910434] [2023-11-29 00:01:33,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185910434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:33,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:33,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 00:01:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132066938] [2023-11-29 00:01:33,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:01:33,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:01:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:01:33,724 INFO L87 Difference]: Start difference. First operand 749 states and 1084 transitions. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 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 00:01:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:35,047 INFO L93 Difference]: Finished difference Result 2147 states and 3154 transitions. [2023-11-29 00:01:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:01:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 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 138 [2023-11-29 00:01:35,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:35,054 INFO L225 Difference]: With dead ends: 2147 [2023-11-29 00:01:35,055 INFO L226 Difference]: Without dead ends: 1581 [2023-11-29 00:01:35,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:01:35,057 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 734 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:35,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 866 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:01:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-29 00:01:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 749. [2023-11-29 00:01:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.4491978609625669) internal successors, (1084), 748 states have internal predecessors, (1084), 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 00:01:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1084 transitions. [2023-11-29 00:01:35,118 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1084 transitions. Word has length 138 [2023-11-29 00:01:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:35,118 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1084 transitions. [2023-11-29 00:01:35,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 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 00:01:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1084 transitions. [2023-11-29 00:01:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 00:01:35,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:35,122 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:01:35,122 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash 92060108, now seen corresponding path program 1 times [2023-11-29 00:01:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561665073] [2023-11-29 00:01:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561665073] [2023-11-29 00:01:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561665073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:01:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578341742] [2023-11-29 00:01:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:36,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:01:36,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:01:36,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:01:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:36,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 00:01:36,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:37,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:01:37,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578341742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:37,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:01:37,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2023-11-29 00:01:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459154654] [2023-11-29 00:01:37,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:01:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:01:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:01:37,281 INFO L87 Difference]: Start difference. First operand 749 states and 1084 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 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 00:01:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:38,357 INFO L93 Difference]: Finished difference Result 2127 states and 3091 transitions. [2023-11-29 00:01:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:01:38,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 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 138 [2023-11-29 00:01:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:38,363 INFO L225 Difference]: With dead ends: 2127 [2023-11-29 00:01:38,363 INFO L226 Difference]: Without dead ends: 1561 [2023-11-29 00:01:38,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:01:38,365 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 420 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:38,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 530 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:01:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-11-29 00:01:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 895. [2023-11-29 00:01:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.4384787472035794) internal successors, (1286), 894 states have internal predecessors, (1286), 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 00:01:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1286 transitions. [2023-11-29 00:01:38,438 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1286 transitions. Word has length 138 [2023-11-29 00:01:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:38,439 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1286 transitions. [2023-11-29 00:01:38,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 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 00:01:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1286 transitions. [2023-11-29 00:01:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 00:01:38,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:38,441 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:38,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:01:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 00:01:38,642 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:38,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 37667210, now seen corresponding path program 1 times [2023-11-29 00:01:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204517165] [2023-11-29 00:01:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:01:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204517165] [2023-11-29 00:01:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204517165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:01:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826834154] [2023-11-29 00:01:39,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:39,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:01:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:01:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:01:39,636 INFO L87 Difference]: Start difference. First operand 895 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 00:01:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:39,720 INFO L93 Difference]: Finished difference Result 1421 states and 2067 transitions. [2023-11-29 00:01:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:01:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 138 [2023-11-29 00:01:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:39,724 INFO L225 Difference]: With dead ends: 1421 [2023-11-29 00:01:39,724 INFO L226 Difference]: Without dead ends: 685 [2023-11-29 00:01:39,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:01:39,726 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 177 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:39,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 468 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:01:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-29 00:01:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 649. [2023-11-29 00:01:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.4506172839506173) internal successors, (940), 648 states have internal predecessors, (940), 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 00:01:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 940 transitions. [2023-11-29 00:01:39,760 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 940 transitions. Word has length 138 [2023-11-29 00:01:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:39,760 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 940 transitions. [2023-11-29 00:01:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 00:01:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 940 transitions. [2023-11-29 00:01:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 00:01:39,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:39,763 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:01:39,763 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:39,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash -791540552, now seen corresponding path program 1 times [2023-11-29 00:01:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120779247] [2023-11-29 00:01:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120779247] [2023-11-29 00:01:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120779247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:41,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:01:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401849569] [2023-11-29 00:01:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:41,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:01:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:01:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:01:41,820 INFO L87 Difference]: Start difference. First operand 649 states and 940 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 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 00:01:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:42,551 INFO L93 Difference]: Finished difference Result 1405 states and 2070 transitions. [2023-11-29 00:01:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:01:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 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 00:01:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:42,556 INFO L225 Difference]: With dead ends: 1405 [2023-11-29 00:01:42,556 INFO L226 Difference]: Without dead ends: 915 [2023-11-29 00:01:42,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:01:42,557 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 422 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:42,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 422 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:01:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-11-29 00:01:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 653. [2023-11-29 00:01:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.4478527607361964) internal successors, (944), 652 states have internal predecessors, (944), 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 00:01:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 944 transitions. [2023-11-29 00:01:42,598 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 944 transitions. Word has length 139 [2023-11-29 00:01:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:42,598 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 944 transitions. [2023-11-29 00:01:42,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 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 00:01:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 944 transitions. [2023-11-29 00:01:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 00:01:42,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:42,601 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:01:42,601 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:42,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:42,601 INFO L85 PathProgramCache]: Analyzing trace with hash -807059270, now seen corresponding path program 1 times [2023-11-29 00:01:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953788012] [2023-11-29 00:01:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:45,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:45,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953788012] [2023-11-29 00:01:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953788012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:01:45,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501903138] [2023-11-29 00:01:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:45,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:01:45,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:01:45,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:01:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:45,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 00:01:45,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:46,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:01:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:47,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501903138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:01:47,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:01:47,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 15] total 45 [2023-11-29 00:01:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572838480] [2023-11-29 00:01:47,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:01:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 00:01:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 00:01:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 00:01:47,149 INFO L87 Difference]: Start difference. First operand 653 states and 944 transitions. Second operand has 45 states, 45 states have (on average 8.511111111111111) internal successors, (383), 45 states have internal predecessors, (383), 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 00:01:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:52,113 INFO L93 Difference]: Finished difference Result 2312 states and 3437 transitions. [2023-11-29 00:01:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-29 00:01:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.511111111111111) internal successors, (383), 45 states have internal predecessors, (383), 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 00:01:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:52,121 INFO L225 Difference]: With dead ends: 2312 [2023-11-29 00:01:52,121 INFO L226 Difference]: Without dead ends: 1818 [2023-11-29 00:01:52,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3129 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2042, Invalid=9730, Unknown=0, NotChecked=0, Total=11772 [2023-11-29 00:01:52,126 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 4351 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 4665 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 4693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:52,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 1498 Invalid, 4693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4665 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 00:01:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2023-11-29 00:01:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 795. [2023-11-29 00:01:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.4609571788413098) internal successors, (1160), 794 states have internal predecessors, (1160), 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 00:01:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1160 transitions. [2023-11-29 00:01:52,163 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1160 transitions. Word has length 139 [2023-11-29 00:01:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:52,163 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1160 transitions. [2023-11-29 00:01:52,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.511111111111111) internal successors, (383), 45 states have internal predecessors, (383), 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 00:01:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1160 transitions. [2023-11-29 00:01:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 00:01:52,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:52,165 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:52,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:01:52,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:01:52,365 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:52,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1433043366, now seen corresponding path program 1 times [2023-11-29 00:01:52,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435617237] [2023-11-29 00:01:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:52,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 51 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:54,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:54,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435617237] [2023-11-29 00:01:54,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435617237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:01:54,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252973229] [2023-11-29 00:01:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:54,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:01:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:01:54,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:01:54,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:01:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:55,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 00:01:55,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:55,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:01:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 37 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252973229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:01:56,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:01:56,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 30 [2023-11-29 00:01:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590727507] [2023-11-29 00:01:56,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:01:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:01:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:01:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:01:56,237 INFO L87 Difference]: Start difference. First operand 795 states and 1160 transitions. Second operand has 30 states, 30 states have (on average 11.533333333333333) internal successors, (346), 30 states have internal predecessors, (346), 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 00:02:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:02:00,579 INFO L93 Difference]: Finished difference Result 5764 states and 8526 transitions. [2023-11-29 00:02:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-29 00:02:00,580 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 11.533333333333333) internal successors, (346), 30 states have internal predecessors, (346), 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 00:02:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:02:00,598 INFO L225 Difference]: With dead ends: 5764 [2023-11-29 00:02:00,598 INFO L226 Difference]: Without dead ends: 5128 [2023-11-29 00:02:00,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5061 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2319, Invalid=12443, Unknown=0, NotChecked=0, Total=14762 [2023-11-29 00:02:00,604 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 5097 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 2996 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5097 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:02:00,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5097 Valid, 1215 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2996 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:02:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2023-11-29 00:02:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 2092. [2023-11-29 00:02:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 1.4806312769010044) internal successors, (3096), 2091 states have internal predecessors, (3096), 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 00:02:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3096 transitions. [2023-11-29 00:02:00,780 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3096 transitions. Word has length 139 [2023-11-29 00:02:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:02:00,780 INFO L495 AbstractCegarLoop]: Abstraction has 2092 states and 3096 transitions. [2023-11-29 00:02:00,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.533333333333333) internal successors, (346), 30 states have internal predecessors, (346), 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 00:02:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3096 transitions. [2023-11-29 00:02:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 00:02:00,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:02:00,783 INFO L195 NwaCegarLoop]: trace histogram [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 00:02:00,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:02:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:02:00,984 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:02:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash 931782506, now seen corresponding path program 1 times [2023-11-29 00:02:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659245896] [2023-11-29 00:02:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 67 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659245896] [2023-11-29 00:02:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659245896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:02:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185687542] [2023-11-29 00:02:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:05,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:02:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:02:05,238 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:02:05,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:02:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:05,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 00:02:05,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:02:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:06,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:02:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 49 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185687542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:02:08,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:02:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2023-11-29 00:02:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396243752] [2023-11-29 00:02:08,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:02:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 00:02:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 00:02:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1658, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 00:02:08,327 INFO L87 Difference]: Start difference. First operand 2092 states and 3096 transitions. Second operand has 44 states, 44 states have (on average 8.840909090909092) internal successors, (389), 44 states have internal predecessors, (389), 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 00:02:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:02:19,268 INFO L93 Difference]: Finished difference Result 5660 states and 8383 transitions. [2023-11-29 00:02:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 00:02:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.840909090909092) internal successors, (389), 44 states have internal predecessors, (389), 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 00:02:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:02:19,281 INFO L225 Difference]: With dead ends: 5660 [2023-11-29 00:02:19,281 INFO L226 Difference]: Without dead ends: 3657 [2023-11-29 00:02:19,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1921, Invalid=7585, Unknown=0, NotChecked=0, Total=9506 [2023-11-29 00:02:19,286 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 1663 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 5250 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 5261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:02:19,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 1886 Invalid, 5261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5250 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 00:02:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2023-11-29 00:02:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 1887. [2023-11-29 00:02:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.4750795334040296) internal successors, (2782), 1886 states have internal predecessors, (2782), 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 00:02:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2782 transitions. [2023-11-29 00:02:19,398 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2782 transitions. Word has length 139 [2023-11-29 00:02:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:02:19,399 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 2782 transitions. [2023-11-29 00:02:19,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.840909090909092) internal successors, (389), 44 states have internal predecessors, (389), 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 00:02:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2782 transitions. [2023-11-29 00:02:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 00:02:19,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:02:19,401 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-29 00:02:19,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:02:19,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:02:19,601 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:02:19,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash -278980000, now seen corresponding path program 1 times [2023-11-29 00:02:19,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:19,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867703202] [2023-11-29 00:02:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:19,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867703202] [2023-11-29 00:02:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867703202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:02:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152145401] [2023-11-29 00:02:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:21,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:02:21,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:02:21,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:02:21,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:02:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:21,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-29 00:02:21,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:02:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 37 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:22,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:02:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152145401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:02:24,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:02:24,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 17] total 39 [2023-11-29 00:02:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804393785] [2023-11-29 00:02:24,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:02:24,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 00:02:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 00:02:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 00:02:24,307 INFO L87 Difference]: Start difference. First operand 1887 states and 2782 transitions. Second operand has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 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 00:02:31,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:02:31,715 INFO L93 Difference]: Finished difference Result 14110 states and 20735 transitions. [2023-11-29 00:02:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-11-29 00:02:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 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 140 [2023-11-29 00:02:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:02:31,751 INFO L225 Difference]: With dead ends: 14110 [2023-11-29 00:02:31,751 INFO L226 Difference]: Without dead ends: 12312 [2023-11-29 00:02:31,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7635 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4141, Invalid=18811, Unknown=0, NotChecked=0, Total=22952 [2023-11-29 00:02:31,757 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 7124 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 4984 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7124 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 4984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:02:31,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7124 Valid, 1824 Invalid, 5124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 4984 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 00:02:31,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12312 states. [2023-11-29 00:02:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12312 to 1579. [2023-11-29 00:02:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 1.444233206590621) internal successors, (2279), 1578 states have internal predecessors, (2279), 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 00:02:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2279 transitions. [2023-11-29 00:02:31,906 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2279 transitions. Word has length 140 [2023-11-29 00:02:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:02:31,907 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 2279 transitions. [2023-11-29 00:02:31,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 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 00:02:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2279 transitions. [2023-11-29 00:02:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 00:02:31,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:02:31,909 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-29 00:02:31,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:02:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:02:32,109 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:02:32,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1938650398, now seen corresponding path program 1 times [2023-11-29 00:02:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268382420] [2023-11-29 00:02:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:02:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:33,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268382420] [2023-11-29 00:02:33,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268382420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:02:33,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:02:33,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:02:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674677965] [2023-11-29 00:02:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:02:33,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:02:33,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:02:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:02:33,088 INFO L87 Difference]: Start difference. First operand 1579 states and 2279 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 00:02:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:02:33,257 INFO L93 Difference]: Finished difference Result 3145 states and 4543 transitions. [2023-11-29 00:02:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:02:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 140 [2023-11-29 00:02:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:02:33,260 INFO L225 Difference]: With dead ends: 3145 [2023-11-29 00:02:33,260 INFO L226 Difference]: Without dead ends: 1634 [2023-11-29 00:02:33,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:02:33,262 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 257 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:02:33,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 453 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:02:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-29 00:02:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1604. [2023-11-29 00:02:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.4435433562071116) internal successors, (2314), 1603 states have internal predecessors, (2314), 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 00:02:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2314 transitions. [2023-11-29 00:02:33,357 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2314 transitions. Word has length 140 [2023-11-29 00:02:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:02:33,357 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2314 transitions. [2023-11-29 00:02:33,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 00:02:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2314 transitions. [2023-11-29 00:02:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 00:02:33,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:02:33,359 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:33,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 00:02:33,359 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:02:33,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -990784616, now seen corresponding path program 1 times [2023-11-29 00:02:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:33,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133166584] [2023-11-29 00:02:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:02:34,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:34,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133166584] [2023-11-29 00:02:34,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133166584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:02:34,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:02:34,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:02:34,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492598291] [2023-11-29 00:02:34,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:02:34,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:02:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:02:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:02:34,573 INFO L87 Difference]: Start difference. First operand 1604 states and 2314 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 8 states have internal predecessors, (124), 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 00:02:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:02:35,415 INFO L93 Difference]: Finished difference Result 3135 states and 4515 transitions. [2023-11-29 00:02:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:02:35,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 8 states have internal predecessors, (124), 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 140 [2023-11-29 00:02:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:02:35,417 INFO L225 Difference]: With dead ends: 3135 [2023-11-29 00:02:35,418 INFO L226 Difference]: Without dead ends: 1334 [2023-11-29 00:02:35,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:02:35,419 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 178 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:02:35,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 510 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:02:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-11-29 00:02:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1323. [2023-11-29 00:02:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 1.4304084720121029) internal successors, (1891), 1322 states have internal predecessors, (1891), 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 00:02:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1891 transitions. [2023-11-29 00:02:35,492 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1891 transitions. Word has length 140 [2023-11-29 00:02:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:02:35,492 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1891 transitions. [2023-11-29 00:02:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 8 states have internal predecessors, (124), 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 00:02:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1891 transitions. [2023-11-29 00:02:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 00:02:35,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:02:35,494 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-29 00:02:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 00:02:35,494 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:02:35,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1398334906, now seen corresponding path program 1 times [2023-11-29 00:02:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569980818] [2023-11-29 00:02:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-29 00:02:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569980818] [2023-11-29 00:02:37,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569980818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:02:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941006940] [2023-11-29 00:02:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:37,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:02:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:02:37,198 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:02:37,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:02:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:37,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-29 00:02:37,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:02:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 44 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:39,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:02:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941006940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:02:42,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:02:42,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 27, 21] total 52 [2023-11-29 00:02:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480278421] [2023-11-29 00:02:42,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:02:42,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 00:02:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 00:02:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=2265, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 00:02:42,620 INFO L87 Difference]: Start difference. First operand 1323 states and 1891 transitions. Second operand has 53 states, 53 states have (on average 6.754716981132075) internal successors, (358), 52 states have internal predecessors, (358), 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 00:02:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:02:57,036 INFO L93 Difference]: Finished difference Result 7168 states and 10196 transitions. [2023-11-29 00:02:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-11-29 00:02:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.754716981132075) internal successors, (358), 52 states have internal predecessors, (358), 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 140 [2023-11-29 00:02:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:02:57,059 INFO L225 Difference]: With dead ends: 7168 [2023-11-29 00:02:57,060 INFO L226 Difference]: Without dead ends: 5938 [2023-11-29 00:02:57,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16941 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=6708, Invalid=37602, Unknown=0, NotChecked=0, Total=44310 [2023-11-29 00:02:57,065 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 6390 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 6742 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6390 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 6818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 6742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:02:57,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6390 Valid, 2010 Invalid, 6818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 6742 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 00:02:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2023-11-29 00:02:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 1920. [2023-11-29 00:02:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 1.41323606044815) internal successors, (2712), 1919 states have internal predecessors, (2712), 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 00:02:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2712 transitions. [2023-11-29 00:02:57,196 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2712 transitions. Word has length 140 [2023-11-29 00:02:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:02:57,196 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2712 transitions. [2023-11-29 00:02:57,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.754716981132075) internal successors, (358), 52 states have internal predecessors, (358), 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 00:02:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2712 transitions. [2023-11-29 00:02:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 00:02:57,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:02:57,198 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-29 00:02:57,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:02:57,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:02:57,399 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:02:57,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1571835778, now seen corresponding path program 1 times [2023-11-29 00:02:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330467451] [2023-11-29 00:02:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:57,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:03:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:00,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330467451] [2023-11-29 00:03:00,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330467451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:00,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:00,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:03:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075098384] [2023-11-29 00:03:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:03:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:03:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:03:00,407 INFO L87 Difference]: Start difference. First operand 1920 states and 2712 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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 00:03:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:00,588 INFO L93 Difference]: Finished difference Result 3698 states and 5230 transitions. [2023-11-29 00:03:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:03:00,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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 140 [2023-11-29 00:03:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:00,592 INFO L225 Difference]: With dead ends: 3698 [2023-11-29 00:03:00,592 INFO L226 Difference]: Without dead ends: 1864 [2023-11-29 00:03:00,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:03:00,594 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 183 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:00,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 443 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:03:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2023-11-29 00:03:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1847. [2023-11-29 00:03:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 1.4165763813651138) internal successors, (2615), 1846 states have internal predecessors, (2615), 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 00:03:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2615 transitions. [2023-11-29 00:03:00,707 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2615 transitions. Word has length 140 [2023-11-29 00:03:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:00,707 INFO L495 AbstractCegarLoop]: Abstraction has 1847 states and 2615 transitions. [2023-11-29 00:03:00,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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 00:03:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2615 transitions. [2023-11-29 00:03:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-29 00:03:00,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:00,709 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:03:00,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 00:03:00,709 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:00,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:00,709 INFO L85 PathProgramCache]: Analyzing trace with hash -611512462, now seen corresponding path program 1 times [2023-11-29 00:03:00,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:00,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051707966] [2023-11-29 00:03:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 147 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:03:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051707966] [2023-11-29 00:03:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051707966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:03:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255008022] [2023-11-29 00:03:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:03:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:03:02,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:03:02,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:03:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:03,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:03:03,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 132 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:03:03,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:03:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:03:04,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255008022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:03:04,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:03:04,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 25 [2023-11-29 00:03:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794482356] [2023-11-29 00:03:04,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:03:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 00:03:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:04,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 00:03:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:03:04,660 INFO L87 Difference]: Start difference. First operand 1847 states and 2615 transitions. Second operand has 25 states, 25 states have (on average 18.12) internal successors, (453), 25 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 00:03:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:09,059 INFO L93 Difference]: Finished difference Result 17637 states and 25140 transitions. [2023-11-29 00:03:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 00:03:09,060 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 18.12) internal successors, (453), 25 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 187 [2023-11-29 00:03:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:09,074 INFO L225 Difference]: With dead ends: 17637 [2023-11-29 00:03:09,074 INFO L226 Difference]: Without dead ends: 15187 [2023-11-29 00:03:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4116 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2013, Invalid=10869, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 00:03:09,079 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 4324 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:09,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4324 Valid, 1460 Invalid, 3629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:03:09,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15187 states. [2023-11-29 00:03:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15187 to 5716. [2023-11-29 00:03:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5715 states have (on average 1.395275590551181) internal successors, (7974), 5715 states have internal predecessors, (7974), 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 00:03:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 7974 transitions. [2023-11-29 00:03:09,467 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 7974 transitions. Word has length 187 [2023-11-29 00:03:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 5716 states and 7974 transitions. [2023-11-29 00:03:09,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 18.12) internal successors, (453), 25 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 00:03:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 7974 transitions. [2023-11-29 00:03:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-29 00:03:09,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:09,473 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-29 00:03:09,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:03:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 00:03:09,674 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:09,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2093290410, now seen corresponding path program 2 times [2023-11-29 00:03:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:09,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135310512] [2023-11-29 00:03:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:09,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:03:17,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135310512] [2023-11-29 00:03:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135310512] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:03:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749787328] [2023-11-29 00:03:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:03:17,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:03:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:03:17,238 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:03:17,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:03:18,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:03:18,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:03:18,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 99 conjunts are in the unsatisfiable core [2023-11-29 00:03:18,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 121 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:03:19,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:03:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 151 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:03:20,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749787328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:03:20,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:03:20,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 16] total 35 [2023-11-29 00:03:20,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233364655] [2023-11-29 00:03:20,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:03:20,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:03:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:03:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:03:20,148 INFO L87 Difference]: Start difference. First operand 5716 states and 7974 transitions. Second operand has 35 states, 35 states have (on average 10.942857142857143) internal successors, (383), 35 states have internal predecessors, (383), 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 00:03:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:24,158 INFO L93 Difference]: Finished difference Result 22284 states and 31129 transitions. [2023-11-29 00:03:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-29 00:03:24,159 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 10.942857142857143) internal successors, (383), 35 states have internal predecessors, (383), 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 188 [2023-11-29 00:03:24,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:24,169 INFO L225 Difference]: With dead ends: 22284 [2023-11-29 00:03:24,169 INFO L226 Difference]: Without dead ends: 16646 [2023-11-29 00:03:24,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1577, Invalid=7735, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 00:03:24,173 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 4926 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4926 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:24,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4926 Valid, 1036 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 00:03:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16646 states. [2023-11-29 00:03:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16646 to 7348. [2023-11-29 00:03:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7348 states, 7347 states have (on average 1.3885939839390227) internal successors, (10202), 7347 states have internal predecessors, (10202), 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 00:03:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7348 states to 7348 states and 10202 transitions. [2023-11-29 00:03:24,613 INFO L78 Accepts]: Start accepts. Automaton has 7348 states and 10202 transitions. Word has length 188 [2023-11-29 00:03:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:24,613 INFO L495 AbstractCegarLoop]: Abstraction has 7348 states and 10202 transitions. [2023-11-29 00:03:24,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.942857142857143) internal successors, (383), 35 states have internal predecessors, (383), 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 00:03:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7348 states and 10202 transitions. [2023-11-29 00:03:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 00:03:24,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:24,618 INFO L195 NwaCegarLoop]: trace histogram [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, 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 00:03:24,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:03:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 00:03:24,819 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash 598883266, now seen corresponding path program 1 times [2023-11-29 00:03:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014907613] [2023-11-29 00:03:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 146 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:03:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014907613] [2023-11-29 00:03:27,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014907613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:03:27,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77080593] [2023-11-29 00:03:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:27,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:03:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:03:27,436 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:03:27,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:03:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:28,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-29 00:03:28,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 121 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:03:29,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:03:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 162 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:03:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77080593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:03:29,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:03:29,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 13] total 37 [2023-11-29 00:03:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440773805] [2023-11-29 00:03:29,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:03:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 00:03:29,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 00:03:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 00:03:29,986 INFO L87 Difference]: Start difference. First operand 7348 states and 10202 transitions. Second operand has 38 states, 38 states have (on average 10.894736842105264) internal successors, (414), 37 states have internal predecessors, (414), 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 00:03:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:33,992 INFO L93 Difference]: Finished difference Result 39995 states and 56235 transitions. [2023-11-29 00:03:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 00:03:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.894736842105264) internal successors, (414), 37 states have internal predecessors, (414), 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 189 [2023-11-29 00:03:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:34,015 INFO L225 Difference]: With dead ends: 39995 [2023-11-29 00:03:34,015 INFO L226 Difference]: Without dead ends: 32687 [2023-11-29 00:03:34,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1476, Invalid=4844, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 00:03:34,022 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 3123 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:34,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3123 Valid, 1235 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 00:03:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32687 states. [2023-11-29 00:03:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32687 to 11462. [2023-11-29 00:03:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11462 states, 11461 states have (on average 1.3791117703516274) internal successors, (15806), 11461 states have internal predecessors, (15806), 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 00:03:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11462 states to 11462 states and 15806 transitions. [2023-11-29 00:03:34,763 INFO L78 Accepts]: Start accepts. Automaton has 11462 states and 15806 transitions. Word has length 189 [2023-11-29 00:03:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:34,763 INFO L495 AbstractCegarLoop]: Abstraction has 11462 states and 15806 transitions. [2023-11-29 00:03:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.894736842105264) internal successors, (414), 37 states have internal predecessors, (414), 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 00:03:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand 11462 states and 15806 transitions. [2023-11-29 00:03:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 00:03:34,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:34,771 INFO L195 NwaCegarLoop]: trace histogram [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, 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 00:03:34,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:03:34,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 00:03:34,972 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:34,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash -683289020, now seen corresponding path program 1 times [2023-11-29 00:03:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257019850] [2023-11-29 00:03:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 00:03:36,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257019850] [2023-11-29 00:03:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257019850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:03:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192242916] [2023-11-29 00:03:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:36,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:03:36,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:03:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:03:36,831 INFO L87 Difference]: Start difference. First operand 11462 states and 15806 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 00:03:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:37,478 INFO L93 Difference]: Finished difference Result 22966 states and 31654 transitions. [2023-11-29 00:03:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:03:37,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 189 [2023-11-29 00:03:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:37,485 INFO L225 Difference]: With dead ends: 22966 [2023-11-29 00:03:37,486 INFO L226 Difference]: Without dead ends: 11544 [2023-11-29 00:03:37,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:03:37,491 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 238 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:37,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 450 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:03:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11544 states. [2023-11-29 00:03:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11544 to 11532. [2023-11-29 00:03:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11531 states have (on average 1.37854479229902) internal successors, (15896), 11531 states have internal predecessors, (15896), 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 00:03:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 15896 transitions. [2023-11-29 00:03:38,119 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 15896 transitions. Word has length 189 [2023-11-29 00:03:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:38,120 INFO L495 AbstractCegarLoop]: Abstraction has 11532 states and 15896 transitions. [2023-11-29 00:03:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 00:03:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 15896 transitions. [2023-11-29 00:03:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 00:03:38,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:38,127 INFO L195 NwaCegarLoop]: trace histogram [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, 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 00:03:38,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 00:03:38,128 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:38,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1336625658, now seen corresponding path program 1 times [2023-11-29 00:03:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:38,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228777134] [2023-11-29 00:03:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:38,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 156 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:03:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228777134] [2023-11-29 00:03:41,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228777134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:03:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799863150] [2023-11-29 00:03:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:41,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:03:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:03:41,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:03:41,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:03:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:41,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-29 00:03:41,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:03:42,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:03:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 167 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799863150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:03:43,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:03:43,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 14] total 31 [2023-11-29 00:03:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694743771] [2023-11-29 00:03:43,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:03:43,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 00:03:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 00:03:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:03:43,478 INFO L87 Difference]: Start difference. First operand 11532 states and 15896 transitions. Second operand has 31 states, 31 states have (on average 15.0) internal successors, (465), 31 states have internal predecessors, (465), 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 00:03:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:51,624 INFO L93 Difference]: Finished difference Result 49757 states and 69083 transitions. [2023-11-29 00:03:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-11-29 00:03:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 15.0) internal successors, (465), 31 states have internal predecessors, (465), 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 189 [2023-11-29 00:03:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:51,646 INFO L225 Difference]: With dead ends: 49757 [2023-11-29 00:03:51,646 INFO L226 Difference]: Without dead ends: 38335 [2023-11-29 00:03:51,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9034 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2939, Invalid=22821, Unknown=0, NotChecked=0, Total=25760 [2023-11-29 00:03:51,656 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 3617 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 4626 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3617 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:51,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3617 Valid, 1979 Invalid, 4669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4626 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 00:03:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38335 states. [2023-11-29 00:03:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38335 to 11962. [2023-11-29 00:03:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11962 states, 11961 states have (on average 1.3714572360170554) internal successors, (16404), 11961 states have internal predecessors, (16404), 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 00:03:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11962 states to 11962 states and 16404 transitions. [2023-11-29 00:03:52,482 INFO L78 Accepts]: Start accepts. Automaton has 11962 states and 16404 transitions. Word has length 189 [2023-11-29 00:03:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:52,483 INFO L495 AbstractCegarLoop]: Abstraction has 11962 states and 16404 transitions. [2023-11-29 00:03:52,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.0) internal successors, (465), 31 states have internal predecessors, (465), 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 00:03:52,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11962 states and 16404 transitions. [2023-11-29 00:03:52,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 00:03:52,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:52,489 INFO L195 NwaCegarLoop]: trace histogram [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, 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 00:03:52,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:03:52,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:03:52,690 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:52,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1729856806, now seen corresponding path program 1 times [2023-11-29 00:03:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:52,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559964244] [2023-11-29 00:03:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:52,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 00:03:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559964244] [2023-11-29 00:03:59,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559964244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:59,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:59,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:03:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150099566] [2023-11-29 00:03:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:59,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:03:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:03:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:03:59,162 INFO L87 Difference]: Start difference. First operand 11962 states and 16404 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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 00:04:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:00,011 INFO L93 Difference]: Finished difference Result 23814 states and 32648 transitions. [2023-11-29 00:04:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:04:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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 189 [2023-11-29 00:04:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:00,018 INFO L225 Difference]: With dead ends: 23814 [2023-11-29 00:04:00,018 INFO L226 Difference]: Without dead ends: 11943 [2023-11-29 00:04:00,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:04:00,024 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 220 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:00,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 150 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:04:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11943 states. [2023-11-29 00:04:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11943 to 11925. [2023-11-29 00:04:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11925 states, 11924 states have (on average 1.3714357598121436) internal successors, (16353), 11924 states have internal predecessors, (16353), 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 00:04:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 16353 transitions. [2023-11-29 00:04:00,616 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 16353 transitions. Word has length 189 [2023-11-29 00:04:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:00,616 INFO L495 AbstractCegarLoop]: Abstraction has 11925 states and 16353 transitions. [2023-11-29 00:04:00,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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 00:04:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 16353 transitions. [2023-11-29 00:04:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 00:04:00,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:00,623 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 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] [2023-11-29 00:04:00,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 00:04:00,623 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:00,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 577669850, now seen corresponding path program 2 times [2023-11-29 00:04:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960442948] [2023-11-29 00:04:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 235 proven. 17 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 00:04:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:04:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960442948] [2023-11-29 00:04:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960442948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:04:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706912412] [2023-11-29 00:04:04,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:04:04,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:04:04,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:04,221 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:04:04,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:04:04,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:04:04,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:04:04,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 130 conjunts are in the unsatisfiable core [2023-11-29 00:04:04,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 250 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 00:04:05,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:04:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 209 proven. 95 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:04:10,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706912412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:04:10,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:04:10,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 19] total 39 [2023-11-29 00:04:10,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570671781] [2023-11-29 00:04:10,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:04:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 00:04:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:04:10,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 00:04:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 00:04:10,170 INFO L87 Difference]: Start difference. First operand 11925 states and 16353 transitions. Second operand has 39 states, 39 states have (on average 13.128205128205128) internal successors, (512), 39 states have internal predecessors, (512), 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 00:04:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:47,007 INFO L93 Difference]: Finished difference Result 94809 states and 130750 transitions. [2023-11-29 00:04:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 473 states. [2023-11-29 00:04:47,008 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 13.128205128205128) internal successors, (512), 39 states have internal predecessors, (512), 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 236 [2023-11-29 00:04:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:47,055 INFO L225 Difference]: With dead ends: 94809 [2023-11-29 00:04:47,055 INFO L226 Difference]: Without dead ends: 82975 [2023-11-29 00:04:47,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117756 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=23809, Invalid=231721, Unknown=0, NotChecked=0, Total=255530 [2023-11-29 00:04:47,073 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 14150 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 4656 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14150 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 4656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:47,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14150 Valid, 1812 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 4656 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 00:04:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82975 states. [2023-11-29 00:04:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82975 to 26487. [2023-11-29 00:04:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26487 states, 26486 states have (on average 1.3729895038888469) internal successors, (36365), 26486 states have internal predecessors, (36365), 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 00:04:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26487 states to 26487 states and 36365 transitions. [2023-11-29 00:04:48,822 INFO L78 Accepts]: Start accepts. Automaton has 26487 states and 36365 transitions. Word has length 236 [2023-11-29 00:04:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:48,823 INFO L495 AbstractCegarLoop]: Abstraction has 26487 states and 36365 transitions. [2023-11-29 00:04:48,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 13.128205128205128) internal successors, (512), 39 states have internal predecessors, (512), 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 00:04:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 26487 states and 36365 transitions. [2023-11-29 00:04:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 00:04:48,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:48,840 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 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] [2023-11-29 00:04:48,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:04:49,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 00:04:49,041 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:04:49,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:49,041 INFO L85 PathProgramCache]: Analyzing trace with hash -468897936, now seen corresponding path program 2 times [2023-11-29 00:04:49,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:04:49,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35489819] [2023-11-29 00:04:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:49,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:04:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:05:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 221 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 00:05:01,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:05:01,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35489819] [2023-11-29 00:05:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35489819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:05:01,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682134059] [2023-11-29 00:05:01,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:05:01,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:05:01,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:05:01,441 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:05:01,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:05:02,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:05:02,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:05:02,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-29 00:05:02,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:05:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 00:05:02,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:05:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 213 proven. 17 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 00:05:03,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682134059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:05:03,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:05:03,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 16] total 34 [2023-11-29 00:05:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869881124] [2023-11-29 00:05:03,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:05:03,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:05:03,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:05:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:05:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:05:03,828 INFO L87 Difference]: Start difference. First operand 26487 states and 36365 transitions. Second operand has 34 states, 34 states have (on average 12.647058823529411) internal successors, (430), 34 states have internal predecessors, (430), 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 00:05:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:05:09,941 INFO L93 Difference]: Finished difference Result 76215 states and 104533 transitions. [2023-11-29 00:05:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-29 00:05:09,942 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 12.647058823529411) internal successors, (430), 34 states have internal predecessors, (430), 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 236 [2023-11-29 00:05:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:05:09,975 INFO L225 Difference]: With dead ends: 76215 [2023-11-29 00:05:09,976 INFO L226 Difference]: Without dead ends: 49803 [2023-11-29 00:05:09,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3536 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1951, Invalid=9821, Unknown=0, NotChecked=0, Total=11772 [2023-11-29 00:05:09,986 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 3410 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:05:09,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3410 Valid, 1702 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:05:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49803 states. [2023-11-29 00:05:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49803 to 26148. [2023-11-29 00:05:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26148 states, 26147 states have (on average 1.3721650667380578) internal successors, (35878), 26147 states have internal predecessors, (35878), 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 00:05:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 35878 transitions. [2023-11-29 00:05:11,482 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 35878 transitions. Word has length 236 [2023-11-29 00:05:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:05:11,482 INFO L495 AbstractCegarLoop]: Abstraction has 26148 states and 35878 transitions. [2023-11-29 00:05:11,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 12.647058823529411) internal successors, (430), 34 states have internal predecessors, (430), 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 00:05:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 35878 transitions. [2023-11-29 00:05:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 00:05:11,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:05:11,491 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 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] [2023-11-29 00:05:11,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:05:11,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 00:05:11,692 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:05:11,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:05:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1660995782, now seen corresponding path program 1 times [2023-11-29 00:05:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:05:11,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425006810] [2023-11-29 00:05:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:05:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:05:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:05:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 252 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 00:05:17,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:05:17,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425006810] [2023-11-29 00:05:17,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425006810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:05:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383238430] [2023-11-29 00:05:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:05:17,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:05:17,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:05:17,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:05:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:05:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:05:18,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 00:05:18,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:05:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-29 00:05:18,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:05:18,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383238430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:05:18,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:05:18,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-11-29 00:05:18,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928033138] [2023-11-29 00:05:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:05:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:05:18,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:05:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:05:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:05:18,746 INFO L87 Difference]: Start difference. First operand 26148 states and 35878 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 00:05:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:05:20,245 INFO L93 Difference]: Finished difference Result 52312 states and 71759 transitions. [2023-11-29 00:05:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:05:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 238 [2023-11-29 00:05:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:05:20,268 INFO L225 Difference]: With dead ends: 52312 [2023-11-29 00:05:20,268 INFO L226 Difference]: Without dead ends: 26204 [2023-11-29 00:05:20,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:05:20,277 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 178 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:05:20,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 200 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:05:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26204 states. [2023-11-29 00:05:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26204 to 26178. [2023-11-29 00:05:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26178 states, 26177 states have (on average 1.3718913550063032) internal successors, (35912), 26177 states have internal predecessors, (35912), 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 00:05:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26178 states to 26178 states and 35912 transitions. [2023-11-29 00:05:21,731 INFO L78 Accepts]: Start accepts. Automaton has 26178 states and 35912 transitions. Word has length 238 [2023-11-29 00:05:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:05:21,731 INFO L495 AbstractCegarLoop]: Abstraction has 26178 states and 35912 transitions. [2023-11-29 00:05:21,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 00:05:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 26178 states and 35912 transitions. [2023-11-29 00:05:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-11-29 00:05:21,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:05:21,739 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 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] [2023-11-29 00:05:21,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 00:05:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 00:05:21,939 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:05:21,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:05:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1224188458, now seen corresponding path program 2 times [2023-11-29 00:05:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:05:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800877035] [2023-11-29 00:05:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:05:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:05:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:05:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-29 00:05:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:05:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800877035] [2023-11-29 00:05:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800877035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:05:31,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536295405] [2023-11-29 00:05:31,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:05:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:05:31,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:05:31,608 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:05:31,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:05:32,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:05:32,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:05:32,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 3348 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 00:05:32,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:05:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 389 proven. 65 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 00:05:33,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:05:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 424 proven. 38 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-29 00:05:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536295405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:05:34,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:05:34,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 15] total 30 [2023-11-29 00:05:34,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534310899] [2023-11-29 00:05:34,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:05:34,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:05:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:05:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:05:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:05:34,307 INFO L87 Difference]: Start difference. First operand 26178 states and 35912 transitions. Second operand has 30 states, 30 states have (on average 17.933333333333334) internal successors, (538), 30 states have internal predecessors, (538), 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 00:05:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:05:38,985 INFO L93 Difference]: Finished difference Result 56086 states and 76528 transitions. [2023-11-29 00:05:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 00:05:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 17.933333333333334) internal successors, (538), 30 states have internal predecessors, (538), 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 286 [2023-11-29 00:05:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:05:39,006 INFO L225 Difference]: With dead ends: 56086 [2023-11-29 00:05:39,006 INFO L226 Difference]: Without dead ends: 29978 [2023-11-29 00:05:39,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1335, Invalid=6321, Unknown=0, NotChecked=0, Total=7656 [2023-11-29 00:05:39,018 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1979 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 4803 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 4817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:05:39,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 1912 Invalid, 4817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4803 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 00:05:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29978 states. [2023-11-29 00:05:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29978 to 6288. [2023-11-29 00:05:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6288 states, 6287 states have (on average 1.3446794973755367) internal successors, (8454), 6287 states have internal predecessors, (8454), 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 00:05:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6288 states to 6288 states and 8454 transitions. [2023-11-29 00:05:39,544 INFO L78 Accepts]: Start accepts. Automaton has 6288 states and 8454 transitions. Word has length 286 [2023-11-29 00:05:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:05:39,545 INFO L495 AbstractCegarLoop]: Abstraction has 6288 states and 8454 transitions. [2023-11-29 00:05:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.933333333333334) internal successors, (538), 30 states have internal predecessors, (538), 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 00:05:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6288 states and 8454 transitions. [2023-11-29 00:05:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-11-29 00:05:39,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:05:39,547 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:05:39,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:05:39,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 00:05:39,748 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:05:39,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:05:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2137607274, now seen corresponding path program 1 times [2023-11-29 00:05:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:05:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337034080] [2023-11-29 00:05:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:05:39,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:05:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:05:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 290 proven. 1 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-29 00:05:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:05:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337034080] [2023-11-29 00:05:58,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337034080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:05:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583652495] [2023-11-29 00:05:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:05:58,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:05:58,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:05:58,656 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:05:58,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:05:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:05:59,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 141 conjunts are in the unsatisfiable core [2023-11-29 00:05:59,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:06:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 365 proven. 142 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 00:06:00,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:06:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 457 proven. 31 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:06:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583652495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:06:03,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:06:03,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 24, 20] total 50 [2023-11-29 00:06:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348219579] [2023-11-29 00:06:03,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:06:03,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 00:06:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 00:06:03,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=2050, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 00:06:03,682 INFO L87 Difference]: Start difference. First operand 6288 states and 8454 transitions. Second operand has 51 states, 51 states have (on average 11.823529411764707) internal successors, (603), 50 states have internal predecessors, (603), 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 00:06:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:35,524 INFO L93 Difference]: Finished difference Result 86348 states and 116816 transitions. [2023-11-29 00:06:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2023-11-29 00:06:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 11.823529411764707) internal successors, (603), 50 states have internal predecessors, (603), 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 287 [2023-11-29 00:06:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:35,587 INFO L225 Difference]: With dead ends: 86348 [2023-11-29 00:06:35,587 INFO L226 Difference]: Without dead ends: 80130 [2023-11-29 00:06:35,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85621 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=16293, Invalid=190277, Unknown=0, NotChecked=0, Total=206570 [2023-11-29 00:06:35,603 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 16061 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 10638 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16061 SdHoareTripleChecker+Valid, 4273 SdHoareTripleChecker+Invalid, 10837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 10638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:35,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16061 Valid, 4273 Invalid, 10837 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [199 Valid, 10638 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-29 00:06:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80130 states. [2023-11-29 00:06:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80130 to 17450. [2023-11-29 00:06:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17450 states, 17449 states have (on average 1.3370393718837756) internal successors, (23330), 17449 states have internal predecessors, (23330), 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 00:06:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17450 states to 17450 states and 23330 transitions. [2023-11-29 00:06:37,013 INFO L78 Accepts]: Start accepts. Automaton has 17450 states and 23330 transitions. Word has length 287 [2023-11-29 00:06:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:37,013 INFO L495 AbstractCegarLoop]: Abstraction has 17450 states and 23330 transitions. [2023-11-29 00:06:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 11.823529411764707) internal successors, (603), 50 states have internal predecessors, (603), 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 00:06:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 17450 states and 23330 transitions. [2023-11-29 00:06:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-29 00:06:37,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:37,019 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:37,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:06:37,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:37,219 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:37,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2002927684, now seen corresponding path program 1 times [2023-11-29 00:06:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:37,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198584541] [2023-11-29 00:06:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 315 proven. 15 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-29 00:06:44,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:44,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198584541] [2023-11-29 00:06:44,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198584541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:06:44,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323980939] [2023-11-29 00:06:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:44,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:06:44,484 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:06:44,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:06:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:45,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 3357 conjuncts, 105 conjunts are in the unsatisfiable core [2023-11-29 00:06:45,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:06:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 293 proven. 37 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-29 00:06:45,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:06:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 267 proven. 186 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 00:06:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323980939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:06:46,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:06:46,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 16] total 40 [2023-11-29 00:06:46,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666549742] [2023-11-29 00:06:46,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:06:46,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 00:06:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 00:06:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1397, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 00:06:46,813 INFO L87 Difference]: Start difference. First operand 17450 states and 23330 transitions. Second operand has 40 states, 40 states have (on average 13.075) internal successors, (523), 40 states have internal predecessors, (523), 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 00:06:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:55,924 INFO L93 Difference]: Finished difference Result 102718 states and 138002 transitions. [2023-11-29 00:06:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-29 00:06:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 13.075) internal successors, (523), 40 states have internal predecessors, (523), 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 289 [2023-11-29 00:06:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:55,976 INFO L225 Difference]: With dead ends: 102718 [2023-11-29 00:06:55,976 INFO L226 Difference]: Without dead ends: 85308 [2023-11-29 00:06:55,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3880 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2104, Invalid=11702, Unknown=0, NotChecked=0, Total=13806 [2023-11-29 00:06:55,988 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 2744 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 5958 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 6002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:55,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 2645 Invalid, 6002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5958 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 00:06:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85308 states. [2023-11-29 00:06:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85308 to 32456. [2023-11-29 00:06:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32456 states, 32455 states have (on average 1.328269912186104) internal successors, (43109), 32455 states have internal predecessors, (43109), 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 00:06:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32456 states to 32456 states and 43109 transitions. [2023-11-29 00:06:57,910 INFO L78 Accepts]: Start accepts. Automaton has 32456 states and 43109 transitions. Word has length 289 [2023-11-29 00:06:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:57,910 INFO L495 AbstractCegarLoop]: Abstraction has 32456 states and 43109 transitions. [2023-11-29 00:06:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.075) internal successors, (523), 40 states have internal predecessors, (523), 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 00:06:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 32456 states and 43109 transitions. [2023-11-29 00:06:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-29 00:06:57,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:57,922 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:57,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:06:58,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 00:06:58,122 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:58,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash 652517574, now seen corresponding path program 1 times [2023-11-29 00:06:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:58,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921336109] [2023-11-29 00:06:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:07:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:07:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-29 00:07:03,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:07:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921336109] [2023-11-29 00:07:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921336109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:07:03,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:07:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:07:03,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597371678] [2023-11-29 00:07:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:07:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:07:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:07:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:07:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:07:03,850 INFO L87 Difference]: Start difference. First operand 32456 states and 43109 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 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 00:07:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:07:05,447 INFO L93 Difference]: Finished difference Result 64927 states and 86218 transitions. [2023-11-29 00:07:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:07:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 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 289 [2023-11-29 00:07:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:07:05,472 INFO L225 Difference]: With dead ends: 64927 [2023-11-29 00:07:05,472 INFO L226 Difference]: Without dead ends: 32511 [2023-11-29 00:07:05,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:07:05,483 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 222 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:07:05,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 445 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:07:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32511 states. [2023-11-29 00:07:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32511 to 32500. [2023-11-29 00:07:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32500 states, 32499 states have (on average 1.3280100926182343) internal successors, (43159), 32499 states have internal predecessors, (43159), 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 00:07:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32500 states to 32500 states and 43159 transitions. [2023-11-29 00:07:07,204 INFO L78 Accepts]: Start accepts. Automaton has 32500 states and 43159 transitions. Word has length 289 [2023-11-29 00:07:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:07:07,204 INFO L495 AbstractCegarLoop]: Abstraction has 32500 states and 43159 transitions. [2023-11-29 00:07:07,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 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 00:07:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 32500 states and 43159 transitions. [2023-11-29 00:07:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-29 00:07:07,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:07:07,215 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:07,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-29 00:07:07,215 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:07:07,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:07:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -897617668, now seen corresponding path program 1 times [2023-11-29 00:07:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:07:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092841077] [2023-11-29 00:07:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:07:07,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:07:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:07:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 541 proven. 15 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-29 00:07:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:07:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092841077] [2023-11-29 00:07:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092841077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:07:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509071406] [2023-11-29 00:07:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:07:19,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:07:19,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:07:19,680 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:07:19,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:07:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:07:21,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 3971 conjuncts, 100 conjunts are in the unsatisfiable core [2023-11-29 00:07:21,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:07:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 479 proven. 98 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-11-29 00:07:22,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:07:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 645 proven. 26 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 00:07:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509071406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:07:23,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:07:23,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 14] total 37 [2023-11-29 00:07:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321527657] [2023-11-29 00:07:23,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:07:23,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 00:07:23,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:07:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 00:07:23,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:07:23,856 INFO L87 Difference]: Start difference. First operand 32500 states and 43159 transitions. Second operand has 37 states, 37 states have (on average 16.45945945945946) internal successors, (609), 37 states have internal predecessors, (609), 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 00:07:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:07:32,769 INFO L93 Difference]: Finished difference Result 98039 states and 130571 transitions. [2023-11-29 00:07:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-11-29 00:07:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 16.45945945945946) internal successors, (609), 37 states have internal predecessors, (609), 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 336 [2023-11-29 00:07:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:07:32,813 INFO L225 Difference]: With dead ends: 98039 [2023-11-29 00:07:32,813 INFO L226 Difference]: Without dead ends: 65623 [2023-11-29 00:07:32,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1804, Invalid=10628, Unknown=0, NotChecked=0, Total=12432 [2023-11-29 00:07:32,825 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2505 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 8061 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 8087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:07:32,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2505 Valid, 3331 Invalid, 8087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 8061 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 00:07:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65623 states. [2023-11-29 00:07:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65623 to 43148. [2023-11-29 00:07:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43148 states, 43147 states have (on average 1.3229888520638746) internal successors, (57083), 43147 states have internal predecessors, (57083), 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 00:07:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43148 states to 43148 states and 57083 transitions. [2023-11-29 00:07:35,414 INFO L78 Accepts]: Start accepts. Automaton has 43148 states and 57083 transitions. Word has length 336 [2023-11-29 00:07:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:07:35,414 INFO L495 AbstractCegarLoop]: Abstraction has 43148 states and 57083 transitions. [2023-11-29 00:07:35,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 16.45945945945946) internal successors, (609), 37 states have internal predecessors, (609), 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 00:07:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 43148 states and 57083 transitions. [2023-11-29 00:07:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-29 00:07:35,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:07:35,425 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:35,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 00:07:35,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:07:35,626 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:07:35,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:07:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2046939518, now seen corresponding path program 1 times [2023-11-29 00:07:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:07:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225719242] [2023-11-29 00:07:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:07:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:07:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:07:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-29 00:07:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:07:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225719242] [2023-11-29 00:07:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225719242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:07:47,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:07:47,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:07:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509388981] [2023-11-29 00:07:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:07:47,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:07:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:07:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:07:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:07:47,402 INFO L87 Difference]: Start difference. First operand 43148 states and 57083 transitions. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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 00:07:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:07:47,549 INFO L93 Difference]: Finished difference Result 43285 states and 57251 transitions. [2023-11-29 00:07:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:07:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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 336 [2023-11-29 00:07:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:07:47,550 INFO L225 Difference]: With dead ends: 43285 [2023-11-29 00:07:47,550 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:07:47,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:07:47,561 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 145 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:07:47,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 710 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:07:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:07:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:07:47,562 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 00:07:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:07:47,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 336 [2023-11-29 00:07:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:07:47,562 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:07:47,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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 00:07:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:07:47,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:07:47,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:07:47,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-29 00:07:47,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 00:10:53,893 WARN L293 SmtUtils]: Spent 3.11m on a formula simplification. DAG size of input: 541 DAG size of output: 517 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L349(line 349) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L349-2(line 349) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L349-4(line 349) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L250-2(line 250) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L151(line 151) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L250-4(line 250) no Hoare annotation was computed. [2023-11-29 00:10:57,146 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L151-2(line 151) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L85-2(line 85) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L151-4(line 151) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L85-4(line 85) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L267(line 267) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L267-2(line 267) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L267-4(line 267) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L284(line 284) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L284-2(line 284) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L284-4(line 284) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L86-2(line 86) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L86-4(line 86) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L202(line 202) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L202-2(line 202) no Hoare annotation was computed. [2023-11-29 00:10:57,147 INFO L899 garLoopResultBuilder]: For program point L202-4(line 202) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L87-2(line 87) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L87-4(line 87) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L203-2(line 203) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L203-4(line 203) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L319(line 319) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L319-2(line 319) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L319-4(line 319) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L88(line 88) no Hoare annotation was computed. [2023-11-29 00:10:57,148 INFO L899 garLoopResultBuilder]: For program point L88-2(line 88) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L88-4(line 88) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L171-2(line 171) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L171-4(line 171) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L287(line 287) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L287-2(line 287) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L287-4(line 287) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L89-2(line 89) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L89-4(line 89) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L172(line 172) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L172-2(line 172) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L172-4(line 172) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L355(line 355) no Hoare annotation was computed. [2023-11-29 00:10:57,149 INFO L899 garLoopResultBuilder]: For program point L355-2(line 355) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L355-4(line 355) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L405(line 405) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L405-2(line 405) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L405-4(line 405) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L159(line 159) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L159-2(line 159) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L159-4(line 159) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L358(line 358) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L325(line 325) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L358-2(line 358) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L325-2(line 325) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L358-4(line 358) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L325-4(line 325) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L78-2(line 78) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L78-4(line 78) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L79(line 79) no Hoare annotation was computed. [2023-11-29 00:10:57,150 INFO L899 garLoopResultBuilder]: For program point L79-2(line 79) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L79-4(line 79) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L80-2(line 80) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L80-4(line 80) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L81-2(line 81) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L81-4(line 81) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L82-2(line 82) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L82-4(line 82) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L182-2(line 182) no Hoare annotation was computed. [2023-11-29 00:10:57,151 INFO L899 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L182-4(line 182) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L83-2(line 83) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L83-4(line 83) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L331(line 331) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L331-2(line 331) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L331-4(line 331) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L166(line 166) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L166-2(line 166) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L166-4(line 166) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L895 garLoopResultBuilder]: At program point L117-2(lines 117 421) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~state_43~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~state_64~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~state_28~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~state_51~0#1| 1)) (.cse15 (= |ULTIMATE.start_main_~state_8~0#1| 0)) (.cse16 (= |ULTIMATE.start_main_~state_58~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~state_41~0#1| 0)) (.cse18 (= |ULTIMATE.start_main_~state_60~0#1| 0)) (.cse24 (= |ULTIMATE.start_main_~var_22~0#1| 1)) (.cse25 (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1)) (.cse28 (= |ULTIMATE.start_main_~var_7~0#1| 0)) (.cse19 (+ |ULTIMATE.start_main_~var_88_arg_0~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~var_11_arg_0~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~next_92_arg_1~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~var_74~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~var_24_arg_0~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~var_125~0#1| 1)) (.cse6 (<= |ULTIMATE.start_main_~var_127~0#1| (* (div |ULTIMATE.start_main_~var_127~0#1| 256) 256))) (.cse7 (= |ULTIMATE.start_main_~var_111~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~var_12~0#1| 1)) (.cse11 (<= (+ |ULTIMATE.start_main_~var_88_arg_1~0#1| 1) 0)) (.cse12 (<= 0 (+ 256 |ULTIMATE.start_main_~var_88_arg_1~0#1|))) (.cse13 (= 0 (mod |ULTIMATE.start_main_~var_19_arg_1~0#1| 256))) (.cse20 (= |ULTIMATE.start_main_~state_15~0#1| 0)) (.cse21 (= |ULTIMATE.start_main_~next_138_arg_1~0#1| 0)) (.cse22 (= |ULTIMATE.start_main_~next_80_arg_1~0#1| 0)) (.cse23 (= |ULTIMATE.start_main_~next_112_arg_1~0#1| 0)) (.cse26 (= |ULTIMATE.start_main_~next_128_arg_1~0#1| 0)) (.cse27 (= |ULTIMATE.start_main_~next_126_arg_1~0#1| 1)) (.cse29 (= |ULTIMATE.start_main_~next_106_arg_1~0#1| 0)) (.cse30 (= |ULTIMATE.start_main_~state_72~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (<= |ULTIMATE.start_main_~var_99~0#1| (* (div |ULTIMATE.start_main_~var_99~0#1| 256) 256)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (<= .cse19 0) .cse20 .cse21 .cse22 .cse23 (<= |ULTIMATE.start_main_~var_129~0#1| (* 256 (div |ULTIMATE.start_main_~var_129~0#1| 256))) .cse24 .cse25 .cse26 (= |ULTIMATE.start_main_~next_100_arg_1~0#1| 0) (= |ULTIMATE.start_main_~var_24~0#1| 0) .cse27 (<= |ULTIMATE.start_main_~var_137~0#1| (* 256 (div |ULTIMATE.start_main_~var_137~0#1| 256))) .cse28 .cse29 .cse30 (<= |ULTIMATE.start_main_~next_80_arg_1~0#1| (+ 255 (* (div (+ |ULTIMATE.start_main_~next_80_arg_1~0#1| |ULTIMATE.start_main_~var_88_arg_0~0#1| 1) 256) 256))) (= |ULTIMATE.start_main_~next_130_arg_1~0#1| 0) (<= |ULTIMATE.start_main_~var_105~0#1| (* (div |ULTIMATE.start_main_~var_105~0#1| 256) 256))) (and .cse0 .cse8 .cse10 (= |ULTIMATE.start_main_~state_26~0#1| 0) .cse14 .cse15 .cse16 .cse17 .cse18 .cse24 .cse25 .cse28 (or (and .cse9 (= |ULTIMATE.start_main_~state_62~0#1| 0) .cse20 .cse30) (and (= 0 .cse19) .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~next_94_arg_1~0#1| 0) .cse6 .cse7 .cse9 .cse11 .cse12 .cse13 .cse20 .cse21 .cse22 .cse23 .cse26 .cse27 .cse29 .cse30))))) [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L84-2(line 84) no Hoare annotation was computed. [2023-11-29 00:10:57,152 INFO L899 garLoopResultBuilder]: For program point L117-3(lines 117 421) no Hoare annotation was computed. [2023-11-29 00:10:57,153 INFO L899 garLoopResultBuilder]: For program point L84-4(line 84) no Hoare annotation was computed. [2023-11-29 00:10:57,153 INFO L899 garLoopResultBuilder]: For program point L233(line 233) no Hoare annotation was computed. [2023-11-29 00:10:57,153 INFO L899 garLoopResultBuilder]: For program point L233-2(line 233) no Hoare annotation was computed. [2023-11-29 00:10:57,153 INFO L899 garLoopResultBuilder]: For program point L233-4(line 233) no Hoare annotation was computed. [2023-11-29 00:10:57,155 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-11-29 00:10:57,157 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:10:57,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:10:57 BoogieIcfgContainer [2023-11-29 00:10:57,173 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:10:57,173 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:10:57,173 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:10:57,173 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:10:57,174 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:00:52" (3/4) ... [2023-11-29 00:10:57,176 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:10:57,195 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-29 00:10:57,196 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 00:10:57,198 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:10:57,199 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:10:57,339 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:10:57,340 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:10:57,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:10:57,340 INFO L158 Benchmark]: Toolchain (without parser) took 606882.67ms. Allocated memory was 140.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 100.0MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-11-29 00:10:57,340 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:10:57,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.17ms. Allocated memory is still 140.5MB. Free memory was 100.0MB in the beginning and 78.3MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 00:10:57,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.07ms. Allocated memory is still 140.5MB. Free memory was 78.3MB in the beginning and 64.3MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:10:57,341 INFO L158 Benchmark]: Boogie Preprocessor took 116.57ms. Allocated memory is still 140.5MB. Free memory was 64.3MB in the beginning and 54.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:10:57,341 INFO L158 Benchmark]: RCFGBuilder took 951.41ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 54.6MB in the beginning and 89.0MB in the end (delta: -34.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-11-29 00:10:57,341 INFO L158 Benchmark]: TraceAbstraction took 605127.81ms. Allocated memory was 190.8MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 88.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2023-11-29 00:10:57,342 INFO L158 Benchmark]: Witness Printer took 166.50ms. Allocated memory is still 2.8GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 00:10:57,343 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.17ms. Allocated memory is still 140.5MB. Free memory was 100.0MB in the beginning and 78.3MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.07ms. Allocated memory is still 140.5MB. Free memory was 78.3MB in the beginning and 64.3MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 116.57ms. Allocated memory is still 140.5MB. Free memory was 64.3MB in the beginning and 54.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 951.41ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 54.6MB in the beginning and 89.0MB in the end (delta: -34.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 605127.81ms. Allocated memory was 190.8MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 88.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Witness Printer took 166.50ms. Allocated memory is still 2.8GB. Free memory was 1.7GB in the beginning and 1.7GB 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: 21]: 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, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 605.1s, OverallIterations: 46, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 184.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 189.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96048 SdHoareTripleChecker+Valid, 60.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96048 mSDsluCounter, 46320 SdHoareTripleChecker+Invalid, 53.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40973 mSDsCounter, 1114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95458 IncrementalHoareTripleChecker+Invalid, 96572 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1114 mSolverCounterUnsat, 5347 mSDtfsCounter, 95458 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9813 GetRequests, 6905 SyntacticMatches, 5 SemanticMatches, 2903 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270732 ImplicationChecksByTransitivity, 105.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43148occurred in iteration=45, InterpolantAutomatonStates: 2335, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.8s AutomataMinimizationTime, 46 MinimizatonAttempts, 333440 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 14 NumberOfFragments, 283 HoareAnnotationTreeSize, 1 FomulaSimplifications, 22500522 FormulaSimplificationTreeSizeReduction, 186.3s HoareSimplificationTime, 1 FomulaSimplificationsInter, 174685 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.0s SsaConstructionTime, 104.6s SatisfiabilityAnalysisTime, 99.4s InterpolantComputationTime, 10668 NumberOfCodeBlocks, 10668 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 13888 ConstructedInterpolants, 0 QuantifiedInterpolants, 110852 SizeOfPredicates, 560 NumberOfNonLiveVariables, 42978 ConjunctsInSsa, 1743 ConjunctsInUnsatCore, 84 InterpolantComputations, 29 PerfectInterpolantSequences, 14397/15837 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: 117]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((state_43 == 0) && (var_11_arg_0 == 0)) && (next_92_arg_1 == 0)) && (var_74 == 0)) && (var_24_arg_0 == 1)) && (var_125 == 1)) && (var_127 <= ((var_127 / 256) * 256))) && (var_111 == 0)) && (state_64 == 0)) && (var_12 == 1)) && (state_28 == 0)) && (var_99 <= ((var_99 / 256) * 256))) && ((var_88_arg_1 + 1) <= 0)) && (0 <= (256 + var_88_arg_1))) && (0 == (var_19_arg_1 % 256))) && (state_51 == 1)) && (state_8 == 0)) && (state_58 == 0)) && (state_41 == 0)) && (state_60 == 0)) && ((var_88_arg_0 + 1) <= 0)) && (state_15 == 0)) && (next_138_arg_1 == 0)) && (next_80_arg_1 == 0)) && (next_112_arg_1 == 0)) && (var_129 <= (256 * (var_129 / 256)))) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (next_128_arg_1 == 0)) && (next_100_arg_1 == 0)) && (var_24 == 0)) && (next_126_arg_1 == 1)) && (var_137 <= (256 * (var_137 / 256)))) && (var_7 == 0)) && (next_106_arg_1 == 0)) && (state_72 == 0)) && (next_80_arg_1 <= (255 + ((((next_80_arg_1 + var_88_arg_0) + 1) / 256) * 256)))) && (next_130_arg_1 == 0)) && (var_105 <= ((var_105 / 256) * 256))) || (((((((((((((state_43 == 0) && (state_64 == 0)) && (state_28 == 0)) && (state_26 == 0)) && (state_51 == 1)) && (state_8 == 0)) && (state_58 == 0)) && (state_41 == 0)) && (state_60 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) && (((((var_12 == 1) && (state_62 == 0)) && (state_15 == 0)) && (state_72 == 0)) || (((((((((((((((((((((0 == (var_88_arg_0 + 1)) && (var_11_arg_0 == 0)) && (next_92_arg_1 == 0)) && (var_74 == 0)) && (var_24_arg_0 == 1)) && (var_125 == 1)) && (next_94_arg_1 == 0)) && (var_127 <= ((var_127 / 256) * 256))) && (var_111 == 0)) && (var_12 == 1)) && ((var_88_arg_1 + 1) <= 0)) && (0 <= (256 + var_88_arg_1))) && (0 == (var_19_arg_1 % 256))) && (state_15 == 0)) && (next_138_arg_1 == 0)) && (next_80_arg_1 == 0)) && (next_112_arg_1 == 0)) && (next_128_arg_1 == 0)) && (next_126_arg_1 == 1)) && (next_106_arg_1 == 0)) && (state_72 == 0))))) RESULT: Ultimate proved your program to be correct! [2023-11-29 00:10:57,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88d52a3d-8950-4e0b-ab59-47cf83f5150d/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