./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.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_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/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_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/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_4e489dd8-4c7d-4bef-a0c5-e237de44758d/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 c13079d4927c37ef7c4e12e861d352aca7538cf90caea314288bdceb904b4d72 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:58:44,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:58:44,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 00:58:44,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:58:44,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:58:44,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:58:44,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:58:44,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:58:44,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:58:44,279 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:58:44,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:58:44,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:58:44,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:58:44,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:58:44,281 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:58:44,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:58:44,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:58:44,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:58:44,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:58:44,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:58:44,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:58:44,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:58:44,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:58:44,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:58:44,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:58:44,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:58:44,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:58:44,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:58:44,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:58:44,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:58:44,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:58:44,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:58:44,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:58:44,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:58:44,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:58:44,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:58:44,290 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:58:44,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:58:44,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:58:44,290 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_4e489dd8-4c7d-4bef-a0c5-e237de44758d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c13079d4927c37ef7c4e12e861d352aca7538cf90caea314288bdceb904b4d72 [2023-11-29 00:58:44,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:58:44,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:58:44,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:58:44,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:58:44,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:58:44,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-11-29 00:58:47,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:58:47,455 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:58:47,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-11-29 00:58:47,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/data/54fedee5d/e2da5c15f9c0461eaf2a7a9d2eb62948/FLAGdba772c35 [2023-11-29 00:58:47,480 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/data/54fedee5d/e2da5c15f9c0461eaf2a7a9d2eb62948 [2023-11-29 00:58:47,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:58:47,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:58:47,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:58:47,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:58:47,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:58:47,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:47,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eded918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47, skipping insertion in model container [2023-11-29 00:58:47,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:47,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:58:47,706 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_4e489dd8-4c7d-4bef-a0c5-e237de44758d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2023-11-29 00:58:47,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:58:47,872 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:58:47,884 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_4e489dd8-4c7d-4bef-a0c5-e237de44758d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2023-11-29 00:58:47,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:58:47,965 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:58:47,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47 WrapperNode [2023-11-29 00:58:47,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:58:47,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:58:47,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:58:47,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:58:47,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,183 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1644 [2023-11-29 00:58:48,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:58:48,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:58:48,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:58:48,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:58:48,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,293 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 00:58:48,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:58:48,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:58:48,382 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:58:48,382 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:58:48,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (1/1) ... [2023-11-29 00:58:48,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:58:48,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:48,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:58:48,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:58:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:58:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:58:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:58:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:58:48,645 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:58:48,647 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:58:49,807 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:58:49,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:58:49,860 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:58:49,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:58:49 BoogieIcfgContainer [2023-11-29 00:58:49,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:58:49,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:58:49,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:58:49,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:58:49,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:58:47" (1/3) ... [2023-11-29 00:58:49,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1a325a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:58:49, skipping insertion in model container [2023-11-29 00:58:49,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:58:47" (2/3) ... [2023-11-29 00:58:49,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1a325a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:58:49, skipping insertion in model container [2023-11-29 00:58:49,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:58:49" (3/3) ... [2023-11-29 00:58:49,869 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-11-29 00:58:49,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:58:49,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:58:49,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:58:49,950 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;@66405b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:58:49,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:58:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 258 states have (on average 1.6666666666666667) internal successors, (430), 259 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 00:58:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 00:58:49,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:49,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:49,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:49,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1623680595, now seen corresponding path program 1 times [2023-11-29 00:58:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:49,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398138450] [2023-11-29 00:58:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:49,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:50,724 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 00:58:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398138450] [2023-11-29 00:58:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398138450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:50,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853878978] [2023-11-29 00:58:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:50,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:50,765 INFO L87 Difference]: Start difference. First operand has 260 states, 258 states have (on average 1.6666666666666667) internal successors, (430), 259 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) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 00:58:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:50,841 INFO L93 Difference]: Finished difference Result 426 states and 706 transitions. [2023-11-29 00:58:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:50,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-29 00:58:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:50,856 INFO L225 Difference]: With dead ends: 426 [2023-11-29 00:58:50,856 INFO L226 Difference]: Without dead ends: 260 [2023-11-29 00:58:50,859 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 00:58:50,863 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1264 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 00:58:50,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1264 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:58:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-29 00:58:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-29 00:58:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.6525096525096525) internal successors, (428), 259 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 428 transitions. [2023-11-29 00:58:50,916 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 428 transitions. Word has length 84 [2023-11-29 00:58:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:50,917 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 428 transitions. [2023-11-29 00:58:50,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 00:58:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 428 transitions. [2023-11-29 00:58:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 00:58:50,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:50,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:58:50,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:50,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1207234535, now seen corresponding path program 1 times [2023-11-29 00:58:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:50,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289971045] [2023-11-29 00:58:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:51,225 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 00:58:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289971045] [2023-11-29 00:58:51,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289971045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392358321] [2023-11-29 00:58:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:51,229 INFO L87 Difference]: Start difference. First operand 260 states and 428 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:58:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:51,268 INFO L93 Difference]: Finished difference Result 429 states and 704 transitions. [2023-11-29 00:58:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-29 00:58:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:51,271 INFO L225 Difference]: With dead ends: 429 [2023-11-29 00:58:51,271 INFO L226 Difference]: Without dead ends: 263 [2023-11-29 00:58:51,272 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 00:58:51,274 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1262 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 00:58:51,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1262 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:58:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-29 00:58:51,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2023-11-29 00:58:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.6475095785440612) internal successors, (430), 261 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 00:58:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 430 transitions. [2023-11-29 00:58:51,291 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 430 transitions. Word has length 85 [2023-11-29 00:58:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:51,292 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 430 transitions. [2023-11-29 00:58:51,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:58:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 430 transitions. [2023-11-29 00:58:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:58:51,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:51,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:51,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:58:51,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:51,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1440867065, now seen corresponding path program 1 times [2023-11-29 00:58:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679336311] [2023-11-29 00:58:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:51,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:51,926 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 00:58:51,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679336311] [2023-11-29 00:58:51,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679336311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:51,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:58:51,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502744763] [2023-11-29 00:58:51,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:51,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:58:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:58:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:58:51,930 INFO L87 Difference]: Start difference. First operand 262 states and 430 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 00:58:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:52,385 INFO L93 Difference]: Finished difference Result 771 states and 1259 transitions. [2023-11-29 00:58:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:58:52,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-29 00:58:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:52,391 INFO L225 Difference]: With dead ends: 771 [2023-11-29 00:58:52,391 INFO L226 Difference]: Without dead ends: 603 [2023-11-29 00:58:52,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:58:52,394 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2661 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:52,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 2534 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:58:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-11-29 00:58:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 283. [2023-11-29 00:58:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.6382978723404256) internal successors, (462), 282 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 00:58:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 462 transitions. [2023-11-29 00:58:52,410 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 462 transitions. Word has length 86 [2023-11-29 00:58:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:52,411 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 462 transitions. [2023-11-29 00:58:52,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 00:58:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 462 transitions. [2023-11-29 00:58:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 00:58:52,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:52,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:52,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:58:52,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:52,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -117298803, now seen corresponding path program 1 times [2023-11-29 00:58:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:52,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750133754] [2023-11-29 00:58:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:52,837 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 00:58:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750133754] [2023-11-29 00:58:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750133754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:52,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:52,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:58:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023839554] [2023-11-29 00:58:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:52,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:58:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:52,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:58:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:58:52,840 INFO L87 Difference]: Start difference. First operand 283 states and 462 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 00:58:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:53,226 INFO L93 Difference]: Finished difference Result 781 states and 1275 transitions. [2023-11-29 00:58:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:58:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 00:58:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:53,231 INFO L225 Difference]: With dead ends: 781 [2023-11-29 00:58:53,231 INFO L226 Difference]: Without dead ends: 613 [2023-11-29 00:58:53,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:58:53,233 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 2696 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:53,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2696 Valid, 2549 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:58:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-11-29 00:58:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 288. [2023-11-29 00:58:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.6341463414634145) internal successors, (469), 287 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 469 transitions. [2023-11-29 00:58:53,244 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 469 transitions. Word has length 87 [2023-11-29 00:58:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:53,245 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 469 transitions. [2023-11-29 00:58:53,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 00:58:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 469 transitions. [2023-11-29 00:58:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 00:58:53,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:53,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:53,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:58:53,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:53,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1777488031, now seen corresponding path program 1 times [2023-11-29 00:58:53,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:53,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177728295] [2023-11-29 00:58:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:53,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:53,516 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 00:58:53,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177728295] [2023-11-29 00:58:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177728295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:58:53,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065624228] [2023-11-29 00:58:53,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:53,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:58:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:53,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:58:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:58:53,520 INFO L87 Difference]: Start difference. First operand 288 states and 469 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 00:58:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:53,840 INFO L93 Difference]: Finished difference Result 787 states and 1276 transitions. [2023-11-29 00:58:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:58:53,842 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 00:58:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:53,846 INFO L225 Difference]: With dead ends: 787 [2023-11-29 00:58:53,846 INFO L226 Difference]: Without dead ends: 608 [2023-11-29 00:58:53,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:58:53,848 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2176 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:53,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 2102 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:58:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-29 00:58:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 290. [2023-11-29 00:58:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.6262975778546713) internal successors, (470), 289 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 00:58:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 470 transitions. [2023-11-29 00:58:53,863 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 470 transitions. Word has length 88 [2023-11-29 00:58:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:53,863 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 470 transitions. [2023-11-29 00:58:53,864 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 00:58:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 470 transitions. [2023-11-29 00:58:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 00:58:53,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:53,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:53,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:58:53,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:53,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash -575936655, now seen corresponding path program 1 times [2023-11-29 00:58:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:53,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763366433] [2023-11-29 00:58:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:53,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:54,225 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 00:58:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:54,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763366433] [2023-11-29 00:58:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763366433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:54,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:54,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:58:54,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994896005] [2023-11-29 00:58:54,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:54,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:58:54,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:58:54,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:58:54,228 INFO L87 Difference]: Start difference. First operand 290 states and 470 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 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 00:58:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:54,495 INFO L93 Difference]: Finished difference Result 790 states and 1275 transitions. [2023-11-29 00:58:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:58:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 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 00:58:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:54,500 INFO L225 Difference]: With dead ends: 790 [2023-11-29 00:58:54,500 INFO L226 Difference]: Without dead ends: 606 [2023-11-29 00:58:54,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:58:54,502 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2163 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:54,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 2099 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:58:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-11-29 00:58:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 292. [2023-11-29 00:58:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.6185567010309279) internal successors, (471), 291 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 00:58:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 471 transitions. [2023-11-29 00:58:54,514 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 471 transitions. Word has length 89 [2023-11-29 00:58:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:54,514 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 471 transitions. [2023-11-29 00:58:54,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 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 00:58:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 471 transitions. [2023-11-29 00:58:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 00:58:54,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:54,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:58:54,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:54,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 261394425, now seen corresponding path program 1 times [2023-11-29 00:58:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:54,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109010634] [2023-11-29 00:58:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:54,822 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 00:58:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:54,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109010634] [2023-11-29 00:58:54,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109010634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:54,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:58:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874105595] [2023-11-29 00:58:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:54,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:58:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:58:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:58:54,824 INFO L87 Difference]: Start difference. First operand 292 states and 471 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 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 00:58:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:55,098 INFO L93 Difference]: Finished difference Result 793 states and 1274 transitions. [2023-11-29 00:58:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:58:55,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 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 00:58:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:55,103 INFO L225 Difference]: With dead ends: 793 [2023-11-29 00:58:55,104 INFO L226 Difference]: Without dead ends: 604 [2023-11-29 00:58:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:58:55,105 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 2150 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 2080 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:58:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-29 00:58:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 294. [2023-11-29 00:58:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.6109215017064846) internal successors, (472), 293 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 00:58:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 472 transitions. [2023-11-29 00:58:55,117 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 472 transitions. Word has length 90 [2023-11-29 00:58:55,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:55,118 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 472 transitions. [2023-11-29 00:58:55,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 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 00:58:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 472 transitions. [2023-11-29 00:58:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:58:55,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:55,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:55,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:58:55,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:55,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:55,120 INFO L85 PathProgramCache]: Analyzing trace with hash -806927081, now seen corresponding path program 1 times [2023-11-29 00:58:55,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:55,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864122453] [2023-11-29 00:58:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:55,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:55,375 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 00:58:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:55,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864122453] [2023-11-29 00:58:55,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864122453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:55,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:55,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:58:55,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528804809] [2023-11-29 00:58:55,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:55,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:58:55,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:58:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:58:55,377 INFO L87 Difference]: Start difference. First operand 294 states and 472 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 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 00:58:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:55,663 INFO L93 Difference]: Finished difference Result 796 states and 1273 transitions. [2023-11-29 00:58:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:58:55,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 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 00:58:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:55,668 INFO L225 Difference]: With dead ends: 796 [2023-11-29 00:58:55,668 INFO L226 Difference]: Without dead ends: 602 [2023-11-29 00:58:55,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:58:55,669 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2137 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:55,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 2069 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:58:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-11-29 00:58:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 296. [2023-11-29 00:58:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.6033898305084746) internal successors, (473), 295 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 00:58:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 473 transitions. [2023-11-29 00:58:55,681 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 473 transitions. Word has length 91 [2023-11-29 00:58:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:55,681 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 473 transitions. [2023-11-29 00:58:55,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 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 00:58:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 473 transitions. [2023-11-29 00:58:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 00:58:55,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:55,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:55,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:58:55,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:55,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:55,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1378034349, now seen corresponding path program 1 times [2023-11-29 00:58:55,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:55,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134418088] [2023-11-29 00:58:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:55,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:55,884 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 00:58:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134418088] [2023-11-29 00:58:55,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134418088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463671395] [2023-11-29 00:58:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:55,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:58:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:58:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:55,886 INFO L87 Difference]: Start difference. First operand 296 states and 473 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 00:58:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:56,020 INFO L93 Difference]: Finished difference Result 616 states and 989 transitions. [2023-11-29 00:58:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:58:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 00:58:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:56,024 INFO L225 Difference]: With dead ends: 616 [2023-11-29 00:58:56,024 INFO L226 Difference]: Without dead ends: 421 [2023-11-29 00:58:56,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:58:56,026 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1101 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:56,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1242 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:58:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-11-29 00:58:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 280. [2023-11-29 00:58:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6129032258064515) internal successors, (450), 279 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 00:58:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 450 transitions. [2023-11-29 00:58:56,036 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 450 transitions. Word has length 92 [2023-11-29 00:58:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:56,036 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 450 transitions. [2023-11-29 00:58:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 00:58:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 450 transitions. [2023-11-29 00:58:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-29 00:58:56,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:56,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:56,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:58:56,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:56,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1264062484, now seen corresponding path program 1 times [2023-11-29 00:58:56,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:56,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662100679] [2023-11-29 00:58:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:56,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:56,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:56,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662100679] [2023-11-29 00:58:56,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662100679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:56,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362121138] [2023-11-29 00:58:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:56,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:56,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:56,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:58:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:57,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:58:57,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:57,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:57,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362121138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:57,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:58:57,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 00:58:57,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241124954] [2023-11-29 00:58:57,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:58,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:58,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:58:58,002 INFO L87 Difference]: Start difference. First operand 280 states and 450 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 00:58:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:58,329 INFO L93 Difference]: Finished difference Result 448 states and 724 transitions. [2023-11-29 00:58:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:58,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-11-29 00:58:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:58,332 INFO L225 Difference]: With dead ends: 448 [2023-11-29 00:58:58,332 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 00:58:58,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:58:58,333 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 306 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 511 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 00:58:58,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 511 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:58:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 00:58:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-11-29 00:58:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6057347670250897) internal successors, (448), 279 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 00:58:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 448 transitions. [2023-11-29 00:58:58,342 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 448 transitions. Word has length 196 [2023-11-29 00:58:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:58,342 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 448 transitions. [2023-11-29 00:58:58,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 00:58:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 448 transitions. [2023-11-29 00:58:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-29 00:58:58,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:58,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:58,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:58:58,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:58:58,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:58:58,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash -50597174, now seen corresponding path program 1 times [2023-11-29 00:58:58,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:58,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665178282] [2023-11-29 00:58:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:58,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665178282] [2023-11-29 00:58:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665178282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:59,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:58:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315864053] [2023-11-29 00:58:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:59,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:58:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:58:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:58:59,917 INFO L87 Difference]: Start difference. First operand 280 states and 448 transitions. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 00:59:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:00,283 INFO L93 Difference]: Finished difference Result 592 states and 953 transitions. [2023-11-29 00:59:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:59:00,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-11-29 00:59:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:00,287 INFO L225 Difference]: With dead ends: 592 [2023-11-29 00:59:00,287 INFO L226 Difference]: Without dead ends: 417 [2023-11-29 00:59:00,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:59:00,288 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 819 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:00,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1473 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:59:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-29 00:59:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 331. [2023-11-29 00:59:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.603030303030303) internal successors, (529), 330 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 529 transitions. [2023-11-29 00:59:00,299 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 529 transitions. Word has length 197 [2023-11-29 00:59:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:00,299 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 529 transitions. [2023-11-29 00:59:00,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 00:59:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 529 transitions. [2023-11-29 00:59:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-29 00:59:00,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:00,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:00,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:59:00,302 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:00,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1621303522, now seen corresponding path program 1 times [2023-11-29 00:59:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481327844] [2023-11-29 00:59:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:01,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:01,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481327844] [2023-11-29 00:59:01,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481327844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:01,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:01,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:01,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583539685] [2023-11-29 00:59:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:01,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:59:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:01,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:59:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:01,849 INFO L87 Difference]: Start difference. First operand 331 states and 529 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 00:59:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:02,354 INFO L93 Difference]: Finished difference Result 585 states and 942 transitions. [2023-11-29 00:59:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:59:02,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-11-29 00:59:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:02,357 INFO L225 Difference]: With dead ends: 585 [2023-11-29 00:59:02,357 INFO L226 Difference]: Without dead ends: 417 [2023-11-29 00:59:02,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 00:59:02,358 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 793 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:02,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 747 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:59:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-29 00:59:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2023-11-29 00:59:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.6012084592145015) internal successors, (530), 331 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 00:59:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 530 transitions. [2023-11-29 00:59:02,366 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 530 transitions. Word has length 198 [2023-11-29 00:59:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:02,366 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 530 transitions. [2023-11-29 00:59:02,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 00:59:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 530 transitions. [2023-11-29 00:59:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-29 00:59:02,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:02,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:59:02,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:02,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -54545572, now seen corresponding path program 1 times [2023-11-29 00:59:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473944312] [2023-11-29 00:59:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:03,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:03,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473944312] [2023-11-29 00:59:03,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473944312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:03,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:03,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:59:03,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999452350] [2023-11-29 00:59:03,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:03,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:59:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:59:03,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:59:03,341 INFO L87 Difference]: Start difference. First operand 332 states and 530 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 00:59:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:03,864 INFO L93 Difference]: Finished difference Result 646 states and 1027 transitions. [2023-11-29 00:59:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:59:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-11-29 00:59:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:03,867 INFO L225 Difference]: With dead ends: 646 [2023-11-29 00:59:03,867 INFO L226 Difference]: Without dead ends: 478 [2023-11-29 00:59:03,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:59:03,868 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 809 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:03,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1418 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:59:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-29 00:59:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 415. [2023-11-29 00:59:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.606280193236715) internal successors, (665), 414 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 00:59:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 665 transitions. [2023-11-29 00:59:03,877 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 665 transitions. Word has length 198 [2023-11-29 00:59:03,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:03,878 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 665 transitions. [2023-11-29 00:59:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 00:59:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 665 transitions. [2023-11-29 00:59:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-29 00:59:03,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:03,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:59:03,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:03,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash 107226576, now seen corresponding path program 1 times [2023-11-29 00:59:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:03,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589191956] [2023-11-29 00:59:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:04,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:04,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589191956] [2023-11-29 00:59:04,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589191956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:04,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:04,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:04,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409807875] [2023-11-29 00:59:04,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:04,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:59:04,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:59:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:04,849 INFO L87 Difference]: Start difference. First operand 415 states and 665 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 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 00:59:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:05,359 INFO L93 Difference]: Finished difference Result 585 states and 940 transitions. [2023-11-29 00:59:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:59:05,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 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) Word has length 199 [2023-11-29 00:59:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:05,363 INFO L225 Difference]: With dead ends: 585 [2023-11-29 00:59:05,363 INFO L226 Difference]: Without dead ends: 417 [2023-11-29 00:59:05,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 00:59:05,364 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 731 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:05,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 740 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:59:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-29 00:59:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2023-11-29 00:59:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.6048192771084338) internal successors, (666), 415 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 00:59:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 666 transitions. [2023-11-29 00:59:05,373 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 666 transitions. Word has length 199 [2023-11-29 00:59:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:05,373 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 666 transitions. [2023-11-29 00:59:05,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 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 00:59:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 666 transitions. [2023-11-29 00:59:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-29 00:59:05,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:05,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:05,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:59:05,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:05,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:05,376 INFO L85 PathProgramCache]: Analyzing trace with hash 247775186, now seen corresponding path program 1 times [2023-11-29 00:59:05,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:05,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982042422] [2023-11-29 00:59:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:08,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982042422] [2023-11-29 00:59:08,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982042422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:59:08,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108068002] [2023-11-29 00:59:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:08,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:59:08,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:59:08,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:59:08,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:59:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:09,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 00:59:09,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:10,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:10,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108068002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:10,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:59:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-11-29 00:59:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434133914] [2023-11-29 00:59:10,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:10,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:59:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:59:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:59:10,560 INFO L87 Difference]: Start difference. First operand 416 states and 666 transitions. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 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 00:59:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:11,523 INFO L93 Difference]: Finished difference Result 902 states and 1436 transitions. [2023-11-29 00:59:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:59:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 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) Word has length 199 [2023-11-29 00:59:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:11,528 INFO L225 Difference]: With dead ends: 902 [2023-11-29 00:59:11,528 INFO L226 Difference]: Without dead ends: 617 [2023-11-29 00:59:11,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:59:11,530 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1545 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:11,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1819 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:59:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-29 00:59:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 416. [2023-11-29 00:59:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.6) internal successors, (664), 415 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 00:59:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 664 transitions. [2023-11-29 00:59:11,541 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 664 transitions. Word has length 199 [2023-11-29 00:59:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 664 transitions. [2023-11-29 00:59:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 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 00:59:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 664 transitions. [2023-11-29 00:59:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-29 00:59:11,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:11,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:11,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:59:11,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:59:11,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:11,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:11,744 INFO L85 PathProgramCache]: Analyzing trace with hash -324453882, now seen corresponding path program 1 times [2023-11-29 00:59:11,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:11,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525955421] [2023-11-29 00:59:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525955421] [2023-11-29 00:59:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525955421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:14,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:59:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367618516] [2023-11-29 00:59:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:59:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:59:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:59:14,385 INFO L87 Difference]: Start difference. First operand 416 states and 664 transitions. Second operand has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 00:59:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:14,875 INFO L93 Difference]: Finished difference Result 1228 states and 1966 transitions. [2023-11-29 00:59:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:59:14,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-11-29 00:59:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:14,883 INFO L225 Difference]: With dead ends: 1228 [2023-11-29 00:59:14,883 INFO L226 Difference]: Without dead ends: 997 [2023-11-29 00:59:14,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:59:14,884 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1676 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:14,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 3149 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:59:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-29 00:59:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 605. [2023-11-29 00:59:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.5728476821192052) internal successors, (950), 604 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 00:59:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 950 transitions. [2023-11-29 00:59:14,908 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 950 transitions. Word has length 200 [2023-11-29 00:59:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:14,909 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 950 transitions. [2023-11-29 00:59:14,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 00:59:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 950 transitions. [2023-11-29 00:59:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-29 00:59:14,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:14,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:14,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:59:14,911 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:14,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2107320392, now seen corresponding path program 1 times [2023-11-29 00:59:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:14,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134597430] [2023-11-29 00:59:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:15,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:15,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134597430] [2023-11-29 00:59:15,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134597430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:15,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:15,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:59:15,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831948235] [2023-11-29 00:59:15,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:15,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:15,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:15,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:15,428 INFO L87 Difference]: Start difference. First operand 605 states and 950 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 00:59:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:15,451 INFO L93 Difference]: Finished difference Result 934 states and 1481 transitions. [2023-11-29 00:59:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2023-11-29 00:59:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:15,455 INFO L225 Difference]: With dead ends: 934 [2023-11-29 00:59:15,456 INFO L226 Difference]: Without dead ends: 601 [2023-11-29 00:59:15,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:15,457 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 554 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:15,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 829 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:59:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-29 00:59:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-11-29 00:59:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.5666666666666667) internal successors, (940), 600 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 00:59:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 940 transitions. [2023-11-29 00:59:15,474 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 940 transitions. Word has length 201 [2023-11-29 00:59:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:15,474 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 940 transitions. [2023-11-29 00:59:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 00:59:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 940 transitions. [2023-11-29 00:59:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-29 00:59:15,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:15,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:15,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:59:15,477 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:15,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1785007650, now seen corresponding path program 1 times [2023-11-29 00:59:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:15,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117788673] [2023-11-29 00:59:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:18,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:18,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117788673] [2023-11-29 00:59:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117788673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:59:18,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316400472] [2023-11-29 00:59:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:18,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:59:18,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:59:18,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:59:18,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:59:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:19,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-29 00:59:19,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:20,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:59:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:23,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316400472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:59:23,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:59:23,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 20] total 56 [2023-11-29 00:59:23,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741010632] [2023-11-29 00:59:23,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:59:23,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 00:59:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 00:59:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 00:59:23,250 INFO L87 Difference]: Start difference. First operand 601 states and 940 transitions. Second operand has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 01:01:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:45,416 INFO L93 Difference]: Finished difference Result 34498 states and 55252 transitions. [2023-11-29 01:01:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1080 states. [2023-11-29 01:01:45,417 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 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 201 [2023-11-29 01:01:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:45,514 INFO L225 Difference]: With dead ends: 34498 [2023-11-29 01:01:45,514 INFO L226 Difference]: Without dead ends: 34193 [2023-11-29 01:01:45,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651237 ImplicationChecksByTransitivity, 115.8s TimeCoverageRelationStatistics Valid=142366, Invalid=1142456, Unknown=0, NotChecked=0, Total=1284822 [2023-11-29 01:01:45,598 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 126466 mSDsluCounter, 26740 mSDsCounter, 0 mSdLazyCounter, 14084 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126466 SdHoareTripleChecker+Valid, 27280 SdHoareTripleChecker+Invalid, 14510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 14084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:45,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126466 Valid, 27280 Invalid, 14510 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [426 Valid, 14084 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-11-29 01:01:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34193 states. [2023-11-29 01:01:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34193 to 1057. [2023-11-29 01:01:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.5681818181818181) internal successors, (1656), 1056 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 01:01:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1656 transitions. [2023-11-29 01:01:45,801 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1656 transitions. Word has length 201 [2023-11-29 01:01:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:45,802 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1656 transitions. [2023-11-29 01:01:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 01:01:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1656 transitions. [2023-11-29 01:01:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 01:01:45,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:45,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:45,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:01:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:01:46,011 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:46,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash -276120702, now seen corresponding path program 1 times [2023-11-29 01:01:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:46,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382450340] [2023-11-29 01:01:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:47,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:47,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382450340] [2023-11-29 01:01:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382450340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:47,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:01:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626762147] [2023-11-29 01:01:47,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:47,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:01:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:01:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:01:47,047 INFO L87 Difference]: Start difference. First operand 1057 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 01:01:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:47,268 INFO L93 Difference]: Finished difference Result 1807 states and 2839 transitions. [2023-11-29 01:01:47,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:01:47,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-11-29 01:01:47,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:47,272 INFO L225 Difference]: With dead ends: 1807 [2023-11-29 01:01:47,272 INFO L226 Difference]: Without dead ends: 1437 [2023-11-29 01:01:47,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:01:47,274 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 551 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:47,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 2716 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:01:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2023-11-29 01:01:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1297. [2023-11-29 01:01:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 1.5617283950617284) internal successors, (2024), 1296 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states 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 01:01:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2024 transitions. [2023-11-29 01:01:47,314 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2024 transitions. Word has length 202 [2023-11-29 01:01:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:47,315 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 2024 transitions. [2023-11-29 01:01:47,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 01:01:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2024 transitions. [2023-11-29 01:01:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 01:01:47,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:47,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:47,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:01:47,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:47,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash -206472828, now seen corresponding path program 1 times [2023-11-29 01:01:47,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:47,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358786464] [2023-11-29 01:01:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358786464] [2023-11-29 01:01:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358786464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:49,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:01:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121460908] [2023-11-29 01:01:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:01:49,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:01:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:01:49,672 INFO L87 Difference]: Start difference. First operand 1297 states and 2024 transitions. Second operand has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 01:01:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:49,912 INFO L93 Difference]: Finished difference Result 2882 states and 4533 transitions. [2023-11-29 01:01:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:01:49,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-11-29 01:01:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:49,917 INFO L225 Difference]: With dead ends: 2882 [2023-11-29 01:01:49,917 INFO L226 Difference]: Without dead ends: 2396 [2023-11-29 01:01:49,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:01:49,919 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2037 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:49,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 2478 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:01:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-11-29 01:01:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1184. [2023-11-29 01:01:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 1.558748943364328) internal successors, (1844), 1183 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 01:01:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1844 transitions. [2023-11-29 01:01:50,053 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1844 transitions. Word has length 202 [2023-11-29 01:01:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:50,054 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1844 transitions. [2023-11-29 01:01:50,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 01:01:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1844 transitions. [2023-11-29 01:01:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 01:01:50,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:50,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:01:50,057 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:50,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash 876701434, now seen corresponding path program 1 times [2023-11-29 01:01:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:50,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888283150] [2023-11-29 01:01:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:50,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888283150] [2023-11-29 01:01:51,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888283150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088973614] [2023-11-29 01:01:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:51,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:51,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:51,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:51,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:01:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:52,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-29 01:01:52,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:53,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:01:54,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088973614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:54,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:54,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 19] total 46 [2023-11-29 01:01:54,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634834867] [2023-11-29 01:01:54,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:54,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 01:01:54,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 01:01:54,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:01:54,426 INFO L87 Difference]: Start difference. First operand 1184 states and 1844 transitions. Second operand has 47 states, 47 states have (on average 10.893617021276595) internal successors, (512), 46 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 01:02:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:05,894 INFO L93 Difference]: Finished difference Result 9357 states and 14735 transitions. [2023-11-29 01:02:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-11-29 01:02:05,895 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 10.893617021276595) internal successors, (512), 46 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 203 [2023-11-29 01:02:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:05,902 INFO L225 Difference]: With dead ends: 9357 [2023-11-29 01:02:05,902 INFO L226 Difference]: Without dead ends: 8730 [2023-11-29 01:02:05,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 360 SyntacticMatches, 12 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18413 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8516, Invalid=37924, Unknown=0, NotChecked=0, Total=46440 [2023-11-29 01:02:05,908 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 34122 mSDsluCounter, 26319 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34122 SdHoareTripleChecker+Valid, 27709 SdHoareTripleChecker+Invalid, 4427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:05,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34122 Valid, 27709 Invalid, 4427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 01:02:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8730 states. [2023-11-29 01:02:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8730 to 1604. [2023-11-29 01:02:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.5502183406113537) internal successors, (2485), 1603 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states 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 01:02:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2485 transitions. [2023-11-29 01:02:05,979 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2485 transitions. Word has length 203 [2023-11-29 01:02:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:05,980 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2485 transitions. [2023-11-29 01:02:05,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 10.893617021276595) internal successors, (512), 46 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 01:02:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2485 transitions. [2023-11-29 01:02:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 01:02:05,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:05,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:05,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:02:06,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:06,187 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:06,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash 899074168, now seen corresponding path program 1 times [2023-11-29 01:02:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237888800] [2023-11-29 01:02:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:08,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:08,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237888800] [2023-11-29 01:02:08,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237888800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:08,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:08,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:02:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533512849] [2023-11-29 01:02:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:08,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:02:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:02:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:02:08,414 INFO L87 Difference]: Start difference. First operand 1604 states and 2485 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 01:02:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:08,487 INFO L93 Difference]: Finished difference Result 2827 states and 4394 transitions. [2023-11-29 01:02:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:02:08,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-11-29 01:02:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:08,490 INFO L225 Difference]: With dead ends: 2827 [2023-11-29 01:02:08,490 INFO L226 Difference]: Without dead ends: 1631 [2023-11-29 01:02:08,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:02:08,492 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 297 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:08,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1241 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:02:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-11-29 01:02:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1620. [2023-11-29 01:02:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 1.544780728844966) internal successors, (2501), 1619 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states 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 01:02:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2501 transitions. [2023-11-29 01:02:08,525 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2501 transitions. Word has length 203 [2023-11-29 01:02:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:08,525 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2501 transitions. [2023-11-29 01:02:08,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 01:02:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2501 transitions. [2023-11-29 01:02:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 01:02:08,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:08,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:08,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:02:08,528 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:08,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 772857644, now seen corresponding path program 1 times [2023-11-29 01:02:08,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:08,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549765893] [2023-11-29 01:02:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:11,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:11,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549765893] [2023-11-29 01:02:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549765893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:11,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:11,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:02:11,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596993242] [2023-11-29 01:02:11,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:11,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:02:11,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:11,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:02:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:02:11,008 INFO L87 Difference]: Start difference. First operand 1620 states and 2501 transitions. Second operand has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 01:02:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:11,595 INFO L93 Difference]: Finished difference Result 3813 states and 5959 transitions. [2023-11-29 01:02:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:02:11,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-11-29 01:02:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:11,598 INFO L225 Difference]: With dead ends: 3813 [2023-11-29 01:02:11,598 INFO L226 Difference]: Without dead ends: 2624 [2023-11-29 01:02:11,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:02:11,600 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1249 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3803 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:11,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 3803 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:02:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2023-11-29 01:02:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1795. [2023-11-29 01:02:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.548494983277592) internal successors, (2778), 1794 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states 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 01:02:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2778 transitions. [2023-11-29 01:02:11,654 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2778 transitions. Word has length 203 [2023-11-29 01:02:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:11,654 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2778 transitions. [2023-11-29 01:02:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 01:02:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2778 transitions. [2023-11-29 01:02:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 01:02:11,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:11,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:02:11,657 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:11,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -194493010, now seen corresponding path program 1 times [2023-11-29 01:02:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638593863] [2023-11-29 01:02:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:14,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638593863] [2023-11-29 01:02:14,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638593863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105392561] [2023-11-29 01:02:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:14,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:14,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:14,793 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:02:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:15,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-29 01:02:15,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:17,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105392561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:20,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 28, 22] total 62 [2023-11-29 01:02:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128701283] [2023-11-29 01:02:20,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:20,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 01:02:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 01:02:20,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3557, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 01:02:20,544 INFO L87 Difference]: Start difference. First operand 1795 states and 2778 transitions. Second operand has 63 states, 63 states have (on average 9.507936507936508) internal successors, (599), 62 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 01:02:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:48,666 INFO L93 Difference]: Finished difference Result 14789 states and 23254 transitions. [2023-11-29 01:02:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2023-11-29 01:02:48,667 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 9.507936507936508) internal successors, (599), 62 states have internal predecessors, (599), 0 states have call successors, (0), 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 203 [2023-11-29 01:02:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:48,676 INFO L225 Difference]: With dead ends: 14789 [2023-11-29 01:02:48,676 INFO L226 Difference]: Without dead ends: 14267 [2023-11-29 01:02:48,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34803 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=11444, Invalid=74698, Unknown=0, NotChecked=0, Total=86142 [2023-11-29 01:02:48,683 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 21241 mSDsluCounter, 19335 mSDsCounter, 0 mSdLazyCounter, 10094 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21241 SdHoareTripleChecker+Valid, 19861 SdHoareTripleChecker+Invalid, 10166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 10094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:48,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21241 Valid, 19861 Invalid, 10166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 10094 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-29 01:02:48,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14267 states. [2023-11-29 01:02:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 1960. [2023-11-29 01:02:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 1.5467075038284839) internal successors, (3030), 1959 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states 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 01:02:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 3030 transitions. [2023-11-29 01:02:48,767 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 3030 transitions. Word has length 203 [2023-11-29 01:02:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:48,767 INFO L495 AbstractCegarLoop]: Abstraction has 1960 states and 3030 transitions. [2023-11-29 01:02:48,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 9.507936507936508) internal successors, (599), 62 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 01:02:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 3030 transitions. [2023-11-29 01:02:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 01:02:48,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:48,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:48,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:02:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:48,970 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:48,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1381587924, now seen corresponding path program 1 times [2023-11-29 01:02:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905331803] [2023-11-29 01:02:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905331803] [2023-11-29 01:02:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905331803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:49,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:49,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:02:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842064588] [2023-11-29 01:02:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:49,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:02:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:02:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:02:49,929 INFO L87 Difference]: Start difference. First operand 1960 states and 3030 transitions. Second operand has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 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 01:02:50,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:50,266 INFO L93 Difference]: Finished difference Result 6403 states and 10004 transitions. [2023-11-29 01:02:50,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:02:50,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 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) Word has length 204 [2023-11-29 01:02:50,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:50,271 INFO L225 Difference]: With dead ends: 6403 [2023-11-29 01:02:50,271 INFO L226 Difference]: Without dead ends: 5389 [2023-11-29 01:02:50,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:02:50,273 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2482 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:50,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 4114 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:02:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2023-11-29 01:02:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 2442. [2023-11-29 01:02:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2441 states have (on average 1.552232691519869) internal successors, (3789), 2441 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states 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 01:02:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3789 transitions. [2023-11-29 01:02:50,356 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3789 transitions. Word has length 204 [2023-11-29 01:02:50,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:50,357 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3789 transitions. [2023-11-29 01:02:50,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 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 01:02:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3789 transitions. [2023-11-29 01:02:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 01:02:50,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:50,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:50,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:02:50,360 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:50,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1316596964, now seen corresponding path program 1 times [2023-11-29 01:02:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:50,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126996417] [2023-11-29 01:02:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:50,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126996417] [2023-11-29 01:02:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126996417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034459093] [2023-11-29 01:02:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:55,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:55,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:55,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:55,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:02:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:55,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-29 01:02:55,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:58,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:03:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:01,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034459093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:03:01,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:03:01,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26, 23] total 67 [2023-11-29 01:03:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668434828] [2023-11-29 01:03:01,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:03:01,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 01:03:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 01:03:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=4145, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 01:03:01,475 INFO L87 Difference]: Start difference. First operand 2442 states and 3789 transitions. Second operand has 68 states, 68 states have (on average 8.852941176470589) internal successors, (602), 67 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 01:04:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:05,287 INFO L93 Difference]: Finished difference Result 24049 states and 37938 transitions. [2023-11-29 01:04:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 502 states. [2023-11-29 01:04:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 8.852941176470589) internal successors, (602), 67 states have internal predecessors, (602), 0 states have call successors, (0), 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 204 [2023-11-29 01:04:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:05,299 INFO L225 Difference]: With dead ends: 24049 [2023-11-29 01:04:05,299 INFO L226 Difference]: Without dead ends: 23220 [2023-11-29 01:04:05,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139414 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=39286, Invalid=282770, Unknown=0, NotChecked=0, Total=322056 [2023-11-29 01:04:05,314 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 54434 mSDsluCounter, 25429 mSDsCounter, 0 mSdLazyCounter, 15339 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54434 SdHoareTripleChecker+Valid, 26043 SdHoareTripleChecker+Invalid, 15585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 15339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:05,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54434 Valid, 26043 Invalid, 15585 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [246 Valid, 15339 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-11-29 01:04:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23220 states. [2023-11-29 01:04:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23220 to 3287. [2023-11-29 01:04:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3286 states have (on average 1.5553864881314667) internal successors, (5111), 3286 states have internal predecessors, (5111), 0 states have call successors, (0), 0 states 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 01:04:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5111 transitions. [2023-11-29 01:04:05,462 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5111 transitions. Word has length 204 [2023-11-29 01:04:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:05,462 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 5111 transitions. [2023-11-29 01:04:05,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 8.852941176470589) internal successors, (602), 67 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 01:04:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5111 transitions. [2023-11-29 01:04:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 01:04:05,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:05,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:05,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:04:05,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:04:05,666 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:05,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash 836509854, now seen corresponding path program 1 times [2023-11-29 01:04:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583827082] [2023-11-29 01:04:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:08,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583827082] [2023-11-29 01:04:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583827082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182344676] [2023-11-29 01:04:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:08,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:08,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:08,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:08,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:04:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:09,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-29 01:04:09,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:10,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:11,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182344676] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:11,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:11,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 15] total 45 [2023-11-29 01:04:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985737759] [2023-11-29 01:04:11,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:11,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:04:11,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:11,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:04:11,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1822, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:04:11,954 INFO L87 Difference]: Start difference. First operand 3287 states and 5111 transitions. Second operand has 46 states, 46 states have (on average 12.608695652173912) internal successors, (580), 45 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 01:04:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:19,109 INFO L93 Difference]: Finished difference Result 24027 states and 37865 transitions. [2023-11-29 01:04:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 01:04:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 12.608695652173912) internal successors, (580), 45 states have internal predecessors, (580), 0 states have call successors, (0), 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 204 [2023-11-29 01:04:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:19,123 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 01:04:19,124 INFO L226 Difference]: Without dead ends: 21690 [2023-11-29 01:04:19,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6481 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3612, Invalid=15020, Unknown=0, NotChecked=0, Total=18632 [2023-11-29 01:04:19,130 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 17215 mSDsluCounter, 13521 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17215 SdHoareTripleChecker+Valid, 13999 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:19,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17215 Valid, 13999 Invalid, 2458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:04:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21690 states. [2023-11-29 01:04:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21690 to 3610. [2023-11-29 01:04:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 1.5500138542532558) internal successors, (5594), 3609 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states 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 01:04:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5594 transitions. [2023-11-29 01:04:19,295 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5594 transitions. Word has length 204 [2023-11-29 01:04:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:19,295 INFO L495 AbstractCegarLoop]: Abstraction has 3610 states and 5594 transitions. [2023-11-29 01:04:19,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 12.608695652173912) internal successors, (580), 45 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 01:04:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5594 transitions. [2023-11-29 01:04:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 01:04:19,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:19,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:19,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:04:19,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:04:19,499 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1929462882, now seen corresponding path program 1 times [2023-11-29 01:04:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884753179] [2023-11-29 01:04:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:21,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884753179] [2023-11-29 01:04:21,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884753179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:21,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:21,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:04:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101159111] [2023-11-29 01:04:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:04:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:04:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:04:21,967 INFO L87 Difference]: Start difference. First operand 3610 states and 5594 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 9 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 01:04:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:22,372 INFO L93 Difference]: Finished difference Result 7499 states and 11654 transitions. [2023-11-29 01:04:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:04:22,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 9 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) Word has length 204 [2023-11-29 01:04:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:22,377 INFO L225 Difference]: With dead ends: 7499 [2023-11-29 01:04:22,377 INFO L226 Difference]: Without dead ends: 6559 [2023-11-29 01:04:22,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:04:22,379 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1530 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:22,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 3538 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:04:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2023-11-29 01:04:22,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 3353. [2023-11-29 01:04:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 1.5501193317422435) internal successors, (5196), 3352 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states 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 01:04:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5196 transitions. [2023-11-29 01:04:22,472 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5196 transitions. Word has length 204 [2023-11-29 01:04:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:22,472 INFO L495 AbstractCegarLoop]: Abstraction has 3353 states and 5196 transitions. [2023-11-29 01:04:22,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 9 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 01:04:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5196 transitions. [2023-11-29 01:04:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 01:04:22,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:22,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 01:04:22,475 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:22,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1852562084, now seen corresponding path program 1 times [2023-11-29 01:04:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61077245] [2023-11-29 01:04:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61077245] [2023-11-29 01:04:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61077245] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547841413] [2023-11-29 01:04:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:24,452 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:24,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:04:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:25,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 131 conjunts are in the unsatisfiable core [2023-11-29 01:04:25,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:27,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:32,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547841413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:32,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 26] total 61 [2023-11-29 01:04:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121732256] [2023-11-29 01:04:32,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:32,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 01:04:32,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 01:04:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=3340, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:04:32,695 INFO L87 Difference]: Start difference. First operand 3353 states and 5196 transitions. Second operand has 62 states, 62 states have (on average 9.612903225806452) internal successors, (596), 61 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:59,823 INFO L93 Difference]: Finished difference Result 19743 states and 30707 transitions. [2023-11-29 01:04:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-11-29 01:04:59,824 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 9.612903225806452) internal successors, (596), 61 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-11-29 01:04:59,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:59,833 INFO L225 Difference]: With dead ends: 19743 [2023-11-29 01:04:59,834 INFO L226 Difference]: Without dead ends: 19090 [2023-11-29 01:04:59,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31933 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=15845, Invalid=67965, Unknown=0, NotChecked=0, Total=83810 [2023-11-29 01:04:59,839 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 29474 mSDsluCounter, 16135 mSDsCounter, 0 mSdLazyCounter, 11622 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29474 SdHoareTripleChecker+Valid, 16452 SdHoareTripleChecker+Invalid, 11776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 11622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:59,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29474 Valid, 16452 Invalid, 11776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 11622 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 01:04:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19090 states. [2023-11-29 01:05:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19090 to 5003. [2023-11-29 01:05:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5002 states have (on average 1.548780487804878) internal successors, (7747), 5002 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states 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 01:05:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 7747 transitions. [2023-11-29 01:05:00,013 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 7747 transitions. Word has length 204 [2023-11-29 01:05:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:00,014 INFO L495 AbstractCegarLoop]: Abstraction has 5003 states and 7747 transitions. [2023-11-29 01:05:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 9.612903225806452) internal successors, (596), 61 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 7747 transitions. [2023-11-29 01:05:00,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 01:05:00,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:00,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:00,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:05:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:05:00,218 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:00,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1061009518, now seen corresponding path program 1 times [2023-11-29 01:05:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:00,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946754657] [2023-11-29 01:05:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:01,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946754657] [2023-11-29 01:05:01,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946754657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:01,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:01,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:05:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914218555] [2023-11-29 01:05:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:01,127 INFO L87 Difference]: Start difference. First operand 5003 states and 7747 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 01:05:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:01,357 INFO L93 Difference]: Finished difference Result 7428 states and 11555 transitions. [2023-11-29 01:05:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:05:01,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-29 01:05:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:01,361 INFO L225 Difference]: With dead ends: 7428 [2023-11-29 01:05:01,361 INFO L226 Difference]: Without dead ends: 4185 [2023-11-29 01:05:01,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:05:01,364 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1239 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:01,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2019 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:05:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2023-11-29 01:05:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 4091. [2023-11-29 01:05:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 4090 states have (on average 1.547677261613692) internal successors, (6330), 4090 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states 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 01:05:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 6330 transitions. [2023-11-29 01:05:01,464 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 6330 transitions. Word has length 205 [2023-11-29 01:05:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:01,464 INFO L495 AbstractCegarLoop]: Abstraction has 4091 states and 6330 transitions. [2023-11-29 01:05:01,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 01:05:01,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 6330 transitions. [2023-11-29 01:05:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 01:05:01,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:01,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:01,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 01:05:01,466 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1056008862, now seen corresponding path program 1 times [2023-11-29 01:05:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817827249] [2023-11-29 01:05:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:03,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817827249] [2023-11-29 01:05:03,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817827249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921488059] [2023-11-29 01:05:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:03,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:03,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:05:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:03,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 01:05:03,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:04,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:05:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921488059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:04,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:05:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 28 [2023-11-29 01:05:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890341349] [2023-11-29 01:05:04,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:04,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:05:04,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:05:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:05:04,868 INFO L87 Difference]: Start difference. First operand 4091 states and 6330 transitions. Second operand has 29 states, 29 states have (on average 14.89655172413793) internal successors, (432), 28 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 01:05:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:06,832 INFO L93 Difference]: Finished difference Result 12730 states and 19855 transitions. [2023-11-29 01:05:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:05:06,833 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.89655172413793) internal successors, (432), 28 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-29 01:05:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:06,838 INFO L225 Difference]: With dead ends: 12730 [2023-11-29 01:05:06,838 INFO L226 Difference]: Without dead ends: 10456 [2023-11-29 01:05:06,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 387 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=919, Invalid=3113, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 01:05:06,840 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 9089 mSDsluCounter, 6736 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9089 SdHoareTripleChecker+Valid, 7204 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:06,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9089 Valid, 7204 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:05:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10456 states. [2023-11-29 01:05:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10456 to 4115. [2023-11-29 01:05:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4115 states, 4114 states have (on average 1.5415653864851726) internal successors, (6342), 4114 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states 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 01:05:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 6342 transitions. [2023-11-29 01:05:06,962 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 6342 transitions. Word has length 205 [2023-11-29 01:05:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:06,963 INFO L495 AbstractCegarLoop]: Abstraction has 4115 states and 6342 transitions. [2023-11-29 01:05:06,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.89655172413793) internal successors, (432), 28 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 01:05:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 6342 transitions. [2023-11-29 01:05:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 01:05:06,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:06,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:06,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:05:07,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:07,167 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:07,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash 694024602, now seen corresponding path program 1 times [2023-11-29 01:05:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:07,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815678502] [2023-11-29 01:05:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815678502] [2023-11-29 01:05:07,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815678502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:07,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:07,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:05:07,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363889127] [2023-11-29 01:05:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:07,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:07,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:07,891 INFO L87 Difference]: Start difference. First operand 4115 states and 6342 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 01:05:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:08,550 INFO L93 Difference]: Finished difference Result 11800 states and 18145 transitions. [2023-11-29 01:05:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:05:08,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-29 01:05:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:08,555 INFO L225 Difference]: With dead ends: 11800 [2023-11-29 01:05:08,556 INFO L226 Difference]: Without dead ends: 8054 [2023-11-29 01:05:08,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:05:08,559 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 577 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:08,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1520 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:05:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2023-11-29 01:05:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 4285. [2023-11-29 01:05:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 4284 states have (on average 1.5280112044817926) internal successors, (6546), 4284 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states 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 01:05:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6546 transitions. [2023-11-29 01:05:08,676 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6546 transitions. Word has length 205 [2023-11-29 01:05:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:08,677 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6546 transitions. [2023-11-29 01:05:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 01:05:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6546 transitions. [2023-11-29 01:05:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 01:05:08,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:08,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:08,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 01:05:08,679 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:08,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1373349564, now seen corresponding path program 1 times [2023-11-29 01:05:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:08,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226566647] [2023-11-29 01:05:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:08,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226566647] [2023-11-29 01:05:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226566647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207551569] [2023-11-29 01:05:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:13,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:13,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:13,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:05:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:14,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 143 conjunts are in the unsatisfiable core [2023-11-29 01:05:14,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:17,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:23,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207551569] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:23,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:05:23,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 28] total 70 [2023-11-29 01:05:23,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42293811] [2023-11-29 01:05:23,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-29 01:05:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-29 01:05:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=4449, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 01:05:23,849 INFO L87 Difference]: Start difference. First operand 4285 states and 6546 transitions. Second operand has 71 states, 71 states have (on average 8.43661971830986) internal successors, (599), 70 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 01:05:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:47,349 INFO L93 Difference]: Finished difference Result 16594 states and 25510 transitions. [2023-11-29 01:05:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-11-29 01:05:47,350 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 8.43661971830986) internal successors, (599), 70 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-29 01:05:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:47,360 INFO L225 Difference]: With dead ends: 16594 [2023-11-29 01:05:47,361 INFO L226 Difference]: Without dead ends: 15910 [2023-11-29 01:05:47,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14285 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=5645, Invalid=35361, Unknown=0, NotChecked=0, Total=41006 [2023-11-29 01:05:47,365 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 12647 mSDsluCounter, 16629 mSDsCounter, 0 mSdLazyCounter, 12652 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12647 SdHoareTripleChecker+Valid, 17045 SdHoareTripleChecker+Invalid, 12702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 12652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:47,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12647 Valid, 17045 Invalid, 12702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 12652 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-11-29 01:05:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15910 states. [2023-11-29 01:05:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15910 to 4338. [2023-11-29 01:05:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 1.527553608485128) internal successors, (6625), 4337 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states 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 01:05:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6625 transitions. [2023-11-29 01:05:47,533 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6625 transitions. Word has length 205 [2023-11-29 01:05:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:47,533 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 6625 transitions. [2023-11-29 01:05:47,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 8.43661971830986) internal successors, (599), 70 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 01:05:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6625 transitions. [2023-11-29 01:05:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 01:05:47,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:47,536 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:47,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:05:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:47,736 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:47,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 779757254, now seen corresponding path program 1 times [2023-11-29 01:05:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471424127] [2023-11-29 01:05:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:52,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471424127] [2023-11-29 01:05:52,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471424127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090709346] [2023-11-29 01:05:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:52,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:52,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:52,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:52,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:05:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:52,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-29 01:05:52,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:53,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090709346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:54,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:05:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 14] total 40 [2023-11-29 01:05:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419566307] [2023-11-29 01:05:54,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 01:05:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 01:05:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1429, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:05:54,129 INFO L87 Difference]: Start difference. First operand 4338 states and 6625 transitions. Second operand has 41 states, 41 states have (on average 13.365853658536585) internal successors, (548), 40 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 01:06:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:03,585 INFO L93 Difference]: Finished difference Result 37212 states and 57152 transitions. [2023-11-29 01:06:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-29 01:06:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 13.365853658536585) internal successors, (548), 40 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-29 01:06:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:03,608 INFO L225 Difference]: With dead ends: 37212 [2023-11-29 01:06:03,608 INFO L226 Difference]: Without dead ends: 35029 [2023-11-29 01:06:03,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 383 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5279 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3735, Invalid=13557, Unknown=0, NotChecked=0, Total=17292 [2023-11-29 01:06:03,614 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 22339 mSDsluCounter, 13452 mSDsCounter, 0 mSdLazyCounter, 4478 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22339 SdHoareTripleChecker+Valid, 13934 SdHoareTripleChecker+Invalid, 4545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:03,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22339 Valid, 13934 Invalid, 4545 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 4478 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 01:06:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35029 states. [2023-11-29 01:06:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35029 to 6061. [2023-11-29 01:06:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 6060 states have (on average 1.5235973597359735) internal successors, (9233), 6060 states have internal predecessors, (9233), 0 states have call successors, (0), 0 states 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 01:06:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 9233 transitions. [2023-11-29 01:06:03,899 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 9233 transitions. Word has length 205 [2023-11-29 01:06:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:03,900 INFO L495 AbstractCegarLoop]: Abstraction has 6061 states and 9233 transitions. [2023-11-29 01:06:03,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 13.365853658536585) internal successors, (548), 40 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 01:06:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 9233 transitions. [2023-11-29 01:06:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 01:06:03,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:03,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:03,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:06:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:04,105 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:04,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1943683310, now seen corresponding path program 1 times [2023-11-29 01:06:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109601233] [2023-11-29 01:06:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:06,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109601233] [2023-11-29 01:06:06,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109601233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782996727] [2023-11-29 01:06:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:06,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:06,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:06,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:06,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:06:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-29 01:06:06,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:07,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782996727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:06:10,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:06:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 19] total 46 [2023-11-29 01:06:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307263724] [2023-11-29 01:06:10,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:10,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 01:06:10,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 01:06:10,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1880, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:06:10,167 INFO L87 Difference]: Start difference. First operand 6061 states and 9233 transitions. Second operand has 47 states, 47 states have (on average 12.170212765957446) internal successors, (572), 46 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 01:06:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:22,184 INFO L93 Difference]: Finished difference Result 75265 states and 115552 transitions. [2023-11-29 01:06:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-11-29 01:06:22,186 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 12.170212765957446) internal successors, (572), 46 states have internal predecessors, (572), 0 states have call successors, (0), 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 206 [2023-11-29 01:06:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:22,233 INFO L225 Difference]: With dead ends: 75265 [2023-11-29 01:06:22,233 INFO L226 Difference]: Without dead ends: 70299 [2023-11-29 01:06:22,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12697 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=7163, Invalid=23989, Unknown=0, NotChecked=0, Total=31152 [2023-11-29 01:06:22,246 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 34044 mSDsluCounter, 17266 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34044 SdHoareTripleChecker+Valid, 17804 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:22,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34044 Valid, 17804 Invalid, 2514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 01:06:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70299 states. [2023-11-29 01:06:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70299 to 11495. [2023-11-29 01:06:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11495 states, 11494 states have (on average 1.524795545502001) internal successors, (17526), 11494 states have internal predecessors, (17526), 0 states have call successors, (0), 0 states 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 01:06:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11495 states to 11495 states and 17526 transitions. [2023-11-29 01:06:22,826 INFO L78 Accepts]: Start accepts. Automaton has 11495 states and 17526 transitions. Word has length 206 [2023-11-29 01:06:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:22,827 INFO L495 AbstractCegarLoop]: Abstraction has 11495 states and 17526 transitions. [2023-11-29 01:06:22,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 12.170212765957446) internal successors, (572), 46 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 01:06:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11495 states and 17526 transitions. [2023-11-29 01:06:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 01:06:22,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:22,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:22,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:06:23,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 01:06:23,032 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:23,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1036916938, now seen corresponding path program 1 times [2023-11-29 01:06:23,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:23,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921938576] [2023-11-29 01:06:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921938576] [2023-11-29 01:06:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921938576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110605982] [2023-11-29 01:06:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:25,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:25,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:25,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:25,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:06:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:25,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:06:25,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:26,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110605982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:06:28,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:06:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 18] total 44 [2023-11-29 01:06:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301295429] [2023-11-29 01:06:28,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 01:06:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 01:06:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1774, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:06:28,763 INFO L87 Difference]: Start difference. First operand 11495 states and 17526 transitions. Second operand has 45 states, 45 states have (on average 13.311111111111112) internal successors, (599), 44 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 01:06:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:34,130 INFO L93 Difference]: Finished difference Result 32961 states and 50698 transitions. [2023-11-29 01:06:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-29 01:06:34,131 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 13.311111111111112) internal successors, (599), 44 states have internal predecessors, (599), 0 states have call successors, (0), 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 206 [2023-11-29 01:06:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:34,151 INFO L225 Difference]: With dead ends: 32961 [2023-11-29 01:06:34,151 INFO L226 Difference]: Without dead ends: 28008 [2023-11-29 01:06:34,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1386, Invalid=7356, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 01:06:34,160 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 8450 mSDsluCounter, 9321 mSDsCounter, 0 mSdLazyCounter, 5187 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8450 SdHoareTripleChecker+Valid, 9736 SdHoareTripleChecker+Invalid, 5219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:34,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8450 Valid, 9736 Invalid, 5219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5187 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 01:06:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28008 states. [2023-11-29 01:06:34,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28008 to 11501. [2023-11-29 01:06:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11501 states, 11500 states have (on average 1.5229565217391305) internal successors, (17514), 11500 states have internal predecessors, (17514), 0 states have call successors, (0), 0 states 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 01:06:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11501 states to 11501 states and 17514 transitions. [2023-11-29 01:06:34,655 INFO L78 Accepts]: Start accepts. Automaton has 11501 states and 17514 transitions. Word has length 206 [2023-11-29 01:06:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:34,656 INFO L495 AbstractCegarLoop]: Abstraction has 11501 states and 17514 transitions. [2023-11-29 01:06:34,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 13.311111111111112) internal successors, (599), 44 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 01:06:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 11501 states and 17514 transitions. [2023-11-29 01:06:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 01:06:34,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:34,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:34,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:06:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:34,863 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2068927742, now seen corresponding path program 1 times [2023-11-29 01:06:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:34,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423715075] [2023-11-29 01:06:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:35,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:35,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423715075] [2023-11-29 01:06:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423715075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:35,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:35,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:06:35,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065161927] [2023-11-29 01:06:35,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:35,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:06:35,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:35,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:06:35,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:06:35,474 INFO L87 Difference]: Start difference. First operand 11501 states and 17514 transitions. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 01:06:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:36,393 INFO L93 Difference]: Finished difference Result 47996 states and 73153 transitions. [2023-11-29 01:06:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:06:36,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2023-11-29 01:06:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:36,421 INFO L225 Difference]: With dead ends: 47996 [2023-11-29 01:06:36,421 INFO L226 Difference]: Without dead ends: 36818 [2023-11-29 01:06:36,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:06:36,434 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1075 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:36,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2865 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:06:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36818 states. [2023-11-29 01:06:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36818 to 12957. [2023-11-29 01:06:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 1.5133528866934238) internal successors, (19607), 12956 states have internal predecessors, (19607), 0 states have call successors, (0), 0 states 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 01:06:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 19607 transitions. [2023-11-29 01:06:36,874 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 19607 transitions. Word has length 206 [2023-11-29 01:06:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:36,875 INFO L495 AbstractCegarLoop]: Abstraction has 12957 states and 19607 transitions. [2023-11-29 01:06:36,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 01:06:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 19607 transitions. [2023-11-29 01:06:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 01:06:36,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:36,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:36,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 01:06:36,879 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:36,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 505463208, now seen corresponding path program 1 times [2023-11-29 01:06:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180759390] [2023-11-29 01:06:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180759390] [2023-11-29 01:06:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180759390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:37,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:37,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:06:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340524795] [2023-11-29 01:06:37,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:06:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:06:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:06:37,219 INFO L87 Difference]: Start difference. First operand 12957 states and 19607 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 01:06:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:37,792 INFO L93 Difference]: Finished difference Result 37547 states and 56636 transitions. [2023-11-29 01:06:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:06:37,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2023-11-29 01:06:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:37,810 INFO L225 Difference]: With dead ends: 37547 [2023-11-29 01:06:37,810 INFO L226 Difference]: Without dead ends: 25147 [2023-11-29 01:06:37,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:06:37,820 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 260 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:37,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1433 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25147 states. [2023-11-29 01:06:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25147 to 13321. [2023-11-29 01:06:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13321 states, 13320 states have (on average 1.4993243243243244) internal successors, (19971), 13320 states have internal predecessors, (19971), 0 states have call successors, (0), 0 states 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 01:06:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 19971 transitions. [2023-11-29 01:06:38,233 INFO L78 Accepts]: Start accepts. Automaton has 13321 states and 19971 transitions. Word has length 206 [2023-11-29 01:06:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:38,233 INFO L495 AbstractCegarLoop]: Abstraction has 13321 states and 19971 transitions. [2023-11-29 01:06:38,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 01:06:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13321 states and 19971 transitions. [2023-11-29 01:06:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 01:06:38,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:38,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:38,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 01:06:38,238 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:38,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1699781364, now seen corresponding path program 1 times [2023-11-29 01:06:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:38,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270566002] [2023-11-29 01:06:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:38,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270566002] [2023-11-29 01:06:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270566002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:06:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745011074] [2023-11-29 01:06:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:06:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:38,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:06:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:06:38,593 INFO L87 Difference]: Start difference. First operand 13321 states and 19971 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:39,251 INFO L93 Difference]: Finished difference Result 38228 states and 57034 transitions. [2023-11-29 01:06:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:06:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-11-29 01:06:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:39,274 INFO L225 Difference]: With dead ends: 38228 [2023-11-29 01:06:39,274 INFO L226 Difference]: Without dead ends: 25383 [2023-11-29 01:06:39,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:06:39,284 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 257 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:39,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1882 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25383 states. [2023-11-29 01:06:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25383 to 13685. [2023-11-29 01:06:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13685 states, 13684 states have (on average 1.4860420929552762) internal successors, (20335), 13684 states have internal predecessors, (20335), 0 states have call successors, (0), 0 states 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 01:06:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13685 states to 13685 states and 20335 transitions. [2023-11-29 01:06:39,781 INFO L78 Accepts]: Start accepts. Automaton has 13685 states and 20335 transitions. Word has length 207 [2023-11-29 01:06:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:39,781 INFO L495 AbstractCegarLoop]: Abstraction has 13685 states and 20335 transitions. [2023-11-29 01:06:39,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 13685 states and 20335 transitions. [2023-11-29 01:06:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 01:06:39,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:39,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 01:06:39,785 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash -407181310, now seen corresponding path program 1 times [2023-11-29 01:06:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445299712] [2023-11-29 01:06:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:40,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:40,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445299712] [2023-11-29 01:06:40,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445299712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:40,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:40,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:06:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229163842] [2023-11-29 01:06:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:06:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:06:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:06:40,113 INFO L87 Difference]: Start difference. First operand 13685 states and 20335 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:40,847 INFO L93 Difference]: Finished difference Result 40939 states and 60800 transitions. [2023-11-29 01:06:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:06:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-11-29 01:06:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:40,874 INFO L225 Difference]: With dead ends: 40939 [2023-11-29 01:06:40,874 INFO L226 Difference]: Without dead ends: 27739 [2023-11-29 01:06:40,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 01:06:40,886 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 526 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:40,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1787 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27739 states. [2023-11-29 01:06:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27739 to 14322. [2023-11-29 01:06:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14322 states, 14321 states have (on average 1.4771314852314783) internal successors, (21154), 14321 states have internal predecessors, (21154), 0 states have call successors, (0), 0 states 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 01:06:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14322 states to 14322 states and 21154 transitions. [2023-11-29 01:06:41,317 INFO L78 Accepts]: Start accepts. Automaton has 14322 states and 21154 transitions. Word has length 207 [2023-11-29 01:06:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:41,317 INFO L495 AbstractCegarLoop]: Abstraction has 14322 states and 21154 transitions. [2023-11-29 01:06:41,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14322 states and 21154 transitions. [2023-11-29 01:06:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 01:06:41,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:41,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:41,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 01:06:41,322 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:41,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2048857060, now seen corresponding path program 1 times [2023-11-29 01:06:41,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:41,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845236626] [2023-11-29 01:06:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:41,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845236626] [2023-11-29 01:06:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845236626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:41,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:41,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:06:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361330580] [2023-11-29 01:06:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:41,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:06:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:06:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:06:41,678 INFO L87 Difference]: Start difference. First operand 14322 states and 21154 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:42,066 INFO L93 Difference]: Finished difference Result 28956 states and 42833 transitions. [2023-11-29 01:06:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:06:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-11-29 01:06:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:42,079 INFO L225 Difference]: With dead ends: 28956 [2023-11-29 01:06:42,079 INFO L226 Difference]: Without dead ends: 15137 [2023-11-29 01:06:42,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:06:42,086 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1113 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1277 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 01:06:42,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1277 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:06:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2023-11-29 01:06:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 14259. [2023-11-29 01:06:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14259 states, 14258 states have (on average 1.4754523776125683) internal successors, (21037), 14258 states have internal predecessors, (21037), 0 states have call successors, (0), 0 states 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 01:06:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14259 states to 14259 states and 21037 transitions. [2023-11-29 01:06:42,487 INFO L78 Accepts]: Start accepts. Automaton has 14259 states and 21037 transitions. Word has length 207 [2023-11-29 01:06:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:42,487 INFO L495 AbstractCegarLoop]: Abstraction has 14259 states and 21037 transitions. [2023-11-29 01:06:42,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 14259 states and 21037 transitions. [2023-11-29 01:06:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 01:06:42,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:42,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 01:06:42,492 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:42,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -495080586, now seen corresponding path program 1 times [2023-11-29 01:06:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152273683] [2023-11-29 01:06:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152273683] [2023-11-29 01:06:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152273683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:42,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:42,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:06:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711152100] [2023-11-29 01:06:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:42,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:06:42,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:06:42,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:06:42,789 INFO L87 Difference]: Start difference. First operand 14259 states and 21037 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:43,080 INFO L93 Difference]: Finished difference Result 21667 states and 31949 transitions. [2023-11-29 01:06:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:06:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-11-29 01:06:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:43,090 INFO L225 Difference]: With dead ends: 21667 [2023-11-29 01:06:43,091 INFO L226 Difference]: Without dead ends: 14355 [2023-11-29 01:06:43,095 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 01:06:43,096 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1247 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 01:06:43,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1247 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14355 states. [2023-11-29 01:06:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14355 to 14323. [2023-11-29 01:06:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14323 states, 14322 states have (on average 1.4733277475212958) internal successors, (21101), 14322 states have internal predecessors, (21101), 0 states have call successors, (0), 0 states 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 01:06:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14323 states to 14323 states and 21101 transitions. [2023-11-29 01:06:43,460 INFO L78 Accepts]: Start accepts. Automaton has 14323 states and 21101 transitions. Word has length 207 [2023-11-29 01:06:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:43,460 INFO L495 AbstractCegarLoop]: Abstraction has 14323 states and 21101 transitions. [2023-11-29 01:06:43,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 01:06:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 14323 states and 21101 transitions. [2023-11-29 01:06:43,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 01:06:43,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:43,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:43,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 01:06:43,464 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:43,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash -648357062, now seen corresponding path program 1 times [2023-11-29 01:06:43,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:43,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681450558] [2023-11-29 01:06:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:43,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:45,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681450558] [2023-11-29 01:06:45,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681450558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41439904] [2023-11-29 01:06:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:45,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:45,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:45,321 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:06:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:46,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 100 conjunts are in the unsatisfiable core [2023-11-29 01:06:46,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:47,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:03,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41439904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:03,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:07:03,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 14] total 42 [2023-11-29 01:07:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606388007] [2023-11-29 01:07:03,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:03,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 01:07:03,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 01:07:03,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:07:03,711 INFO L87 Difference]: Start difference. First operand 14323 states and 21101 transitions. Second operand has 43 states, 43 states have (on average 14.162790697674419) internal successors, (609), 42 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 01:07:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:27,563 INFO L93 Difference]: Finished difference Result 112551 states and 166590 transitions. [2023-11-29 01:07:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2023-11-29 01:07:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 14.162790697674419) internal successors, (609), 42 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 207 [2023-11-29 01:07:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:27,642 INFO L225 Difference]: With dead ends: 112551 [2023-11-29 01:07:27,642 INFO L226 Difference]: Without dead ends: 103522 [2023-11-29 01:07:27,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16951 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=8619, Invalid=31983, Unknown=0, NotChecked=0, Total=40602 [2023-11-29 01:07:27,655 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 21666 mSDsluCounter, 13882 mSDsCounter, 0 mSdLazyCounter, 7197 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21666 SdHoareTripleChecker+Valid, 14159 SdHoareTripleChecker+Invalid, 7240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:27,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21666 Valid, 14159 Invalid, 7240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 7197 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-29 01:07:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103522 states. [2023-11-29 01:07:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103522 to 15092. [2023-11-29 01:07:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 1.472069445364787) internal successors, (22215), 15091 states have internal predecessors, (22215), 0 states have call successors, (0), 0 states 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 01:07:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 22215 transitions. [2023-11-29 01:07:28,583 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 22215 transitions. Word has length 207 [2023-11-29 01:07:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:28,584 INFO L495 AbstractCegarLoop]: Abstraction has 15092 states and 22215 transitions. [2023-11-29 01:07:28,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 14.162790697674419) internal successors, (609), 42 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 01:07:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 22215 transitions. [2023-11-29 01:07:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 01:07:28,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:28,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:28,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:07:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:28,791 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:28,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2108569926, now seen corresponding path program 1 times [2023-11-29 01:07:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:28,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968232913] [2023-11-29 01:07:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968232913] [2023-11-29 01:07:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968232913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:29,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:07:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099115537] [2023-11-29 01:07:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:29,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:29,144 INFO L87 Difference]: Start difference. First operand 15092 states and 22215 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:29,536 INFO L93 Difference]: Finished difference Result 29095 states and 42822 transitions. [2023-11-29 01:07:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:07:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-11-29 01:07:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:29,550 INFO L225 Difference]: With dead ends: 29095 [2023-11-29 01:07:29,550 INFO L226 Difference]: Without dead ends: 14191 [2023-11-29 01:07:29,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:29,559 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1070 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1257 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 01:07:29,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1257 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:07:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14191 states. [2023-11-29 01:07:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14191 to 14004. [2023-11-29 01:07:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14004 states, 14003 states have (on average 1.4718274655430978) internal successors, (20610), 14003 states have internal predecessors, (20610), 0 states have call successors, (0), 0 states 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 01:07:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14004 states to 14004 states and 20610 transitions. [2023-11-29 01:07:30,111 INFO L78 Accepts]: Start accepts. Automaton has 14004 states and 20610 transitions. Word has length 208 [2023-11-29 01:07:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:30,111 INFO L495 AbstractCegarLoop]: Abstraction has 14004 states and 20610 transitions. [2023-11-29 01:07:30,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14004 states and 20610 transitions. [2023-11-29 01:07:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 01:07:30,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:30,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:30,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-29 01:07:30,115 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:30,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1069784112, now seen corresponding path program 1 times [2023-11-29 01:07:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83414754] [2023-11-29 01:07:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:30,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83414754] [2023-11-29 01:07:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83414754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:30,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:30,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:07:30,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084328889] [2023-11-29 01:07:30,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:30,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:07:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:07:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:07:30,526 INFO L87 Difference]: Start difference. First operand 14004 states and 20610 transitions. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:31,015 INFO L93 Difference]: Finished difference Result 29333 states and 43179 transitions. [2023-11-29 01:07:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:07:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-11-29 01:07:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:31,026 INFO L225 Difference]: With dead ends: 29333 [2023-11-29 01:07:31,026 INFO L226 Difference]: Without dead ends: 15717 [2023-11-29 01:07:31,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:07:31,033 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1077 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:31,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1509 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:07:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15717 states. [2023-11-29 01:07:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15717 to 13852. [2023-11-29 01:07:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13852 states, 13851 states have (on average 1.4689192116092702) internal successors, (20346), 13851 states have internal predecessors, (20346), 0 states have call successors, (0), 0 states 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 01:07:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13852 states to 13852 states and 20346 transitions. [2023-11-29 01:07:31,413 INFO L78 Accepts]: Start accepts. Automaton has 13852 states and 20346 transitions. Word has length 208 [2023-11-29 01:07:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 13852 states and 20346 transitions. [2023-11-29 01:07:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 13852 states and 20346 transitions. [2023-11-29 01:07:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 01:07:31,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:31,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:31,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-29 01:07:31,417 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:31,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1620348496, now seen corresponding path program 1 times [2023-11-29 01:07:31,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:31,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474866117] [2023-11-29 01:07:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:31,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474866117] [2023-11-29 01:07:31,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474866117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:31,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:31,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:07:31,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508621709] [2023-11-29 01:07:31,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:31,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:31,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:31,770 INFO L87 Difference]: Start difference. First operand 13852 states and 20346 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:32,270 INFO L93 Difference]: Finished difference Result 26619 states and 39192 transitions. [2023-11-29 01:07:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:07:32,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-11-29 01:07:32,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:32,279 INFO L225 Difference]: With dead ends: 26619 [2023-11-29 01:07:32,280 INFO L226 Difference]: Without dead ends: 13043 [2023-11-29 01:07:32,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:32,283 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1032 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1266 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 01:07:32,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1266 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:07:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13043 states. [2023-11-29 01:07:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13043 to 12752. [2023-11-29 01:07:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12752 states, 12751 states have (on average 1.472668810289389) internal successors, (18778), 12751 states have internal predecessors, (18778), 0 states have call successors, (0), 0 states 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 01:07:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 18778 transitions. [2023-11-29 01:07:32,626 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 18778 transitions. Word has length 208 [2023-11-29 01:07:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:32,626 INFO L495 AbstractCegarLoop]: Abstraction has 12752 states and 18778 transitions. [2023-11-29 01:07:32,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 18778 transitions. [2023-11-29 01:07:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 01:07:32,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:32,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-29 01:07:32,628 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:32,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 171258146, now seen corresponding path program 1 times [2023-11-29 01:07:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081316027] [2023-11-29 01:07:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:32,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:32,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081316027] [2023-11-29 01:07:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081316027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:32,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:32,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:07:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638321450] [2023-11-29 01:07:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:32,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:07:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:07:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:07:32,926 INFO L87 Difference]: Start difference. First operand 12752 states and 18778 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:33,213 INFO L93 Difference]: Finished difference Result 22318 states and 32874 transitions. [2023-11-29 01:07:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:07:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-11-29 01:07:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:33,223 INFO L225 Difference]: With dead ends: 22318 [2023-11-29 01:07:33,223 INFO L226 Difference]: Without dead ends: 12833 [2023-11-29 01:07:33,228 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 01:07:33,228 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1247 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 01:07:33,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1247 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:07:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12833 states. [2023-11-29 01:07:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12833 to 12806. [2023-11-29 01:07:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12806 states, 12805 states have (on average 1.470675517376025) internal successors, (18832), 12805 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states 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 01:07:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12806 states to 12806 states and 18832 transitions. [2023-11-29 01:07:33,585 INFO L78 Accepts]: Start accepts. Automaton has 12806 states and 18832 transitions. Word has length 208 [2023-11-29 01:07:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:33,585 INFO L495 AbstractCegarLoop]: Abstraction has 12806 states and 18832 transitions. [2023-11-29 01:07:33,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:33,585 INFO L276 IsEmpty]: Start isEmpty. Operand 12806 states and 18832 transitions. [2023-11-29 01:07:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 01:07:33,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:33,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:33,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-29 01:07:33,587 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:33,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1017676306, now seen corresponding path program 1 times [2023-11-29 01:07:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:33,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867078233] [2023-11-29 01:07:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:36,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867078233] [2023-11-29 01:07:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867078233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:07:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648951359] [2023-11-29 01:07:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:36,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:36,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:36,012 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:36,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:07:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:36,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 01:07:36,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:37,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648951359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:38,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:07:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 11] total 28 [2023-11-29 01:07:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63377387] [2023-11-29 01:07:38,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:38,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:07:38,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:07:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:07:38,110 INFO L87 Difference]: Start difference. First operand 12806 states and 18832 transitions. Second operand has 29 states, 29 states have (on average 16.724137931034484) internal successors, (485), 28 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 01:07:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:42,515 INFO L93 Difference]: Finished difference Result 60987 states and 90027 transitions. [2023-11-29 01:07:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 01:07:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 16.724137931034484) internal successors, (485), 28 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-11-29 01:07:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:42,557 INFO L225 Difference]: With dead ends: 60987 [2023-11-29 01:07:42,557 INFO L226 Difference]: Without dead ends: 54842 [2023-11-29 01:07:42,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 386 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1078, Invalid=3614, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:07:42,566 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 10912 mSDsluCounter, 8124 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10912 SdHoareTripleChecker+Valid, 9012 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:42,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10912 Valid, 9012 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:07:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54842 states. [2023-11-29 01:07:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54842 to 19238. [2023-11-29 01:07:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19238 states, 19237 states have (on average 1.466132972916775) internal successors, (28204), 19237 states have internal predecessors, (28204), 0 states have call successors, (0), 0 states 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 01:07:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19238 states to 19238 states and 28204 transitions. [2023-11-29 01:07:43,244 INFO L78 Accepts]: Start accepts. Automaton has 19238 states and 28204 transitions. Word has length 208 [2023-11-29 01:07:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 19238 states and 28204 transitions. [2023-11-29 01:07:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 16.724137931034484) internal successors, (485), 28 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 01:07:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 19238 states and 28204 transitions. [2023-11-29 01:07:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 01:07:43,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:43,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:43,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:07:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 01:07:43,448 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:43,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2099382612, now seen corresponding path program 1 times [2023-11-29 01:07:43,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:43,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594356742] [2023-11-29 01:07:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594356742] [2023-11-29 01:07:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594356742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:43,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:43,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:07:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290718973] [2023-11-29 01:07:43,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:43,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:43,797 INFO L87 Difference]: Start difference. First operand 19238 states and 28204 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 01:07:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:44,350 INFO L93 Difference]: Finished difference Result 37471 states and 55019 transitions. [2023-11-29 01:07:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:07:44,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2023-11-29 01:07:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:44,365 INFO L225 Difference]: With dead ends: 37471 [2023-11-29 01:07:44,365 INFO L226 Difference]: Without dead ends: 18399 [2023-11-29 01:07:44,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:44,374 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 948 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:44,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1248 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:07:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18399 states. [2023-11-29 01:07:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18399 to 18369. [2023-11-29 01:07:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18369 states, 18368 states have (on average 1.4707643728222997) internal successors, (27015), 18368 states have internal predecessors, (27015), 0 states have call successors, (0), 0 states 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 01:07:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18369 states to 18369 states and 27015 transitions. [2023-11-29 01:07:44,866 INFO L78 Accepts]: Start accepts. Automaton has 18369 states and 27015 transitions. Word has length 209 [2023-11-29 01:07:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:44,866 INFO L495 AbstractCegarLoop]: Abstraction has 18369 states and 27015 transitions. [2023-11-29 01:07:44,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 01:07:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18369 states and 27015 transitions. [2023-11-29 01:07:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-29 01:07:44,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:44,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:44,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-29 01:07:44,874 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:44,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1152370821, now seen corresponding path program 1 times [2023-11-29 01:07:44,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:44,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865510962] [2023-11-29 01:07:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:44,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:49,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:49,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865510962] [2023-11-29 01:07:49,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865510962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:49,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:49,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:07:49,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245792397] [2023-11-29 01:07:49,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:49,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:07:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:49,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:07:49,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:07:49,655 INFO L87 Difference]: Start difference. First operand 18369 states and 27015 transitions. Second operand has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 01:07:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:51,407 INFO L93 Difference]: Finished difference Result 71171 states and 105515 transitions. [2023-11-29 01:07:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:07:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 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 313 [2023-11-29 01:07:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:51,442 INFO L225 Difference]: With dead ends: 71171 [2023-11-29 01:07:51,442 INFO L226 Difference]: Without dead ends: 53657 [2023-11-29 01:07:51,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:07:51,451 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 3947 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:51,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3947 Valid, 1514 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:07:51,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53657 states. [2023-11-29 01:07:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53657 to 34064. [2023-11-29 01:07:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34064 states, 34063 states have (on average 1.4786718727064556) internal successors, (50368), 34063 states have internal predecessors, (50368), 0 states have call successors, (0), 0 states 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 01:07:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34064 states to 34064 states and 50368 transitions. [2023-11-29 01:07:52,250 INFO L78 Accepts]: Start accepts. Automaton has 34064 states and 50368 transitions. Word has length 313 [2023-11-29 01:07:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:52,250 INFO L495 AbstractCegarLoop]: Abstraction has 34064 states and 50368 transitions. [2023-11-29 01:07:52,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 01:07:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 34064 states and 50368 transitions. [2023-11-29 01:07:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-29 01:07:52,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:52,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:52,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-29 01:07:52,270 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:52,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:52,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1860947769, now seen corresponding path program 1 times [2023-11-29 01:07:52,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430423835] [2023-11-29 01:07:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:52,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 75 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430423835] [2023-11-29 01:08:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430423835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918653875] [2023-11-29 01:08:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:00,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:00,558 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:00,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:08:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:01,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 2810 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 01:08:01,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 01:08:01,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 77 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918653875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:02,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 10] total 38 [2023-11-29 01:08:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890349109] [2023-11-29 01:08:02,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 01:08:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 01:08:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 01:08:02,663 INFO L87 Difference]: Start difference. First operand 34064 states and 50368 transitions. Second operand has 38 states, 38 states have (on average 19.763157894736842) internal successors, (751), 38 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 01:08:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:24,415 INFO L93 Difference]: Finished difference Result 226104 states and 334481 transitions. [2023-11-29 01:08:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-11-29 01:08:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 19.763157894736842) internal successors, (751), 38 states have internal predecessors, (751), 0 states have call successors, (0), 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 313 [2023-11-29 01:08:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:24,549 INFO L225 Difference]: With dead ends: 226104 [2023-11-29 01:08:24,549 INFO L226 Difference]: Without dead ends: 192738 [2023-11-29 01:08:24,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26221 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=8243, Invalid=58579, Unknown=0, NotChecked=0, Total=66822 [2023-11-29 01:08:24,568 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 22587 mSDsluCounter, 14643 mSDsCounter, 0 mSdLazyCounter, 9166 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22587 SdHoareTripleChecker+Valid, 15352 SdHoareTripleChecker+Invalid, 9214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 9166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:24,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22587 Valid, 15352 Invalid, 9214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 9166 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 01:08:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192738 states. [2023-11-29 01:08:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192738 to 30162. [2023-11-29 01:08:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30162 states, 30161 states have (on average 1.4870528165511754) internal successors, (44851), 30161 states have internal predecessors, (44851), 0 states have call successors, (0), 0 states 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 01:08:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30162 states to 30162 states and 44851 transitions. [2023-11-29 01:08:25,799 INFO L78 Accepts]: Start accepts. Automaton has 30162 states and 44851 transitions. Word has length 313 [2023-11-29 01:08:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:25,800 INFO L495 AbstractCegarLoop]: Abstraction has 30162 states and 44851 transitions. [2023-11-29 01:08:25,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 19.763157894736842) internal successors, (751), 38 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 01:08:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 30162 states and 44851 transitions. [2023-11-29 01:08:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-29 01:08:25,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:25,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:25,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:08:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-11-29 01:08:26,020 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:26,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1451283083, now seen corresponding path program 1 times [2023-11-29 01:08:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:26,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096384709] [2023-11-29 01:08:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 100 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096384709] [2023-11-29 01:08:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096384709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434458758] [2023-11-29 01:08:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:32,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:32,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:32,018 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:32,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:08:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:32,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 01:08:32,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 73 proven. 22 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-29 01:08:33,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 41 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:34,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434458758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:34,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 37 [2023-11-29 01:08:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391183439] [2023-11-29 01:08:34,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 01:08:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 01:08:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 01:08:34,628 INFO L87 Difference]: Start difference. First operand 30162 states and 44851 transitions. Second operand has 38 states, 38 states have (on average 22.105263157894736) internal successors, (840), 37 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 01:08:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:45,491 INFO L93 Difference]: Finished difference Result 180900 states and 269087 transitions. [2023-11-29 01:08:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-11-29 01:08:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 22.105263157894736) internal successors, (840), 37 states have internal predecessors, (840), 0 states have call successors, (0), 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 314 [2023-11-29 01:08:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:45,604 INFO L225 Difference]: With dead ends: 180900 [2023-11-29 01:08:45,604 INFO L226 Difference]: Without dead ends: 153401 [2023-11-29 01:08:45,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11036 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5036, Invalid=25764, Unknown=0, NotChecked=0, Total=30800 [2023-11-29 01:08:45,633 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 20036 mSDsluCounter, 5199 mSDsCounter, 0 mSdLazyCounter, 3880 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20036 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 3940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:45,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20036 Valid, 5509 Invalid, 3940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3880 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 01:08:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153401 states. [2023-11-29 01:08:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153401 to 37638. [2023-11-29 01:08:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37638 states, 37637 states have (on average 1.4816005526476606) internal successors, (55763), 37637 states have internal predecessors, (55763), 0 states have call successors, (0), 0 states 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 01:08:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37638 states to 37638 states and 55763 transitions. [2023-11-29 01:08:46,736 INFO L78 Accepts]: Start accepts. Automaton has 37638 states and 55763 transitions. Word has length 314 [2023-11-29 01:08:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 37638 states and 55763 transitions. [2023-11-29 01:08:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 22.105263157894736) internal successors, (840), 37 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 01:08:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 37638 states and 55763 transitions. [2023-11-29 01:08:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 01:08:46,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:46,759 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:46,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:08:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:46,960 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:46,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -46229429, now seen corresponding path program 1 times [2023-11-29 01:08:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377002088] [2023-11-29 01:08:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 01:08:52,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377002088] [2023-11-29 01:08:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377002088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223640300] [2023-11-29 01:08:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:52,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:52,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:52,564 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:52,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:08:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:53,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 2818 conjuncts, 98 conjunts are in the unsatisfiable core [2023-11-29 01:08:53,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:54,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 101 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223640300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:09:46,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:09:46,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 15] total 35 [2023-11-29 01:09:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117973545] [2023-11-29 01:09:46,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 01:09:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 01:09:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1052, Unknown=6, NotChecked=0, Total=1260 [2023-11-29 01:09:46,234 INFO L87 Difference]: Start difference. First operand 37638 states and 55763 transitions. Second operand has 36 states, 36 states have (on average 20.38888888888889) internal successors, (734), 35 states have internal predecessors, (734), 0 states have call successors, (0), 0 states 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 01:10:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:10:14,499 INFO L93 Difference]: Finished difference Result 230504 states and 345535 transitions. [2023-11-29 01:10:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-29 01:10:14,500 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 20.38888888888889) internal successors, (734), 35 states have internal predecessors, (734), 0 states have call successors, (0), 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 315 [2023-11-29 01:10:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:10:14,636 INFO L225 Difference]: With dead ends: 230504 [2023-11-29 01:10:14,637 INFO L226 Difference]: Without dead ends: 193369 [2023-11-29 01:10:14,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 600 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7633 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=3169, Invalid=19175, Unknown=6, NotChecked=0, Total=22350 [2023-11-29 01:10:14,669 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 12802 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 5694 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12802 SdHoareTripleChecker+Valid, 8986 SdHoareTripleChecker+Invalid, 5751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 5694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:10:14,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12802 Valid, 8986 Invalid, 5751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 5694 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-11-29 01:10:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193369 states. [2023-11-29 01:10:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193369 to 58320. [2023-11-29 01:10:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58320 states, 58319 states have (on average 1.4789348239853222) internal successors, (86250), 58319 states have internal predecessors, (86250), 0 states have call successors, (0), 0 states 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 01:10:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58320 states to 58320 states and 86250 transitions. [2023-11-29 01:10:16,433 INFO L78 Accepts]: Start accepts. Automaton has 58320 states and 86250 transitions. Word has length 315 [2023-11-29 01:10:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:16,433 INFO L495 AbstractCegarLoop]: Abstraction has 58320 states and 86250 transitions. [2023-11-29 01:10:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 20.38888888888889) internal successors, (734), 35 states have internal predecessors, (734), 0 states have call successors, (0), 0 states 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 01:10:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 58320 states and 86250 transitions. [2023-11-29 01:10:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 01:10:16,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:16,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:16,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:10:16,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:16,660 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:10:16,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash -16902585, now seen corresponding path program 1 times [2023-11-29 01:10:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:16,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156150565] [2023-11-29 01:10:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:16,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:25,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:25,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156150565] [2023-11-29 01:10:25,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156150565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:10:25,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649238891] [2023-11-29 01:10:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:25,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:25,781 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:25,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:10:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:27,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 97 conjunts are in the unsatisfiable core [2023-11-29 01:10:27,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 123 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:28,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 118 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649238891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:10:31,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:10:31,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 18] total 47 [2023-11-29 01:10:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692044499] [2023-11-29 01:10:31,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:10:31,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 01:10:31,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:10:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 01:10:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:10:31,013 INFO L87 Difference]: Start difference. First operand 58320 states and 86250 transitions. Second operand has 48 states, 48 states have (on average 16.25) internal successors, (780), 47 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 01:10:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:10:46,705 INFO L93 Difference]: Finished difference Result 326431 states and 486838 transitions. [2023-11-29 01:10:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 01:10:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 16.25) internal successors, (780), 47 states have internal predecessors, (780), 0 states have call successors, (0), 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 315 [2023-11-29 01:10:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:10:46,927 INFO L225 Difference]: With dead ends: 326431 [2023-11-29 01:10:46,927 INFO L226 Difference]: Without dead ends: 274595 [2023-11-29 01:10:46,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 597 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1927, Invalid=8785, Unknown=0, NotChecked=0, Total=10712 [2023-11-29 01:10:46,973 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 11875 mSDsluCounter, 18987 mSDsCounter, 0 mSdLazyCounter, 10163 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11875 SdHoareTripleChecker+Valid, 19620 SdHoareTripleChecker+Invalid, 10202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 10163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:10:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11875 Valid, 19620 Invalid, 10202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 10163 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 01:10:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274595 states. [2023-11-29 01:10:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274595 to 85953. [2023-11-29 01:10:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85953 states, 85952 states have (on average 1.4839910647803425) internal successors, (127552), 85952 states have internal predecessors, (127552), 0 states have call successors, (0), 0 states 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 01:10:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85953 states to 85953 states and 127552 transitions. [2023-11-29 01:10:49,814 INFO L78 Accepts]: Start accepts. Automaton has 85953 states and 127552 transitions. Word has length 315 [2023-11-29 01:10:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:49,814 INFO L495 AbstractCegarLoop]: Abstraction has 85953 states and 127552 transitions. [2023-11-29 01:10:49,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 16.25) internal successors, (780), 47 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 01:10:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 85953 states and 127552 transitions. [2023-11-29 01:10:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 01:10:49,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:49,858 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:49,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:10:50,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:50,059 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:10:50,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1079788361, now seen corresponding path program 1 times [2023-11-29 01:10:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998481441] [2023-11-29 01:10:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:50,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 133 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:10:56,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998481441] [2023-11-29 01:10:56,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998481441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:10:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592409755] [2023-11-29 01:10:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:56,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:56,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:56,449 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:56,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e489dd8-4c7d-4bef-a0c5-e237de44758d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:10:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:57,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 212 conjunts are in the unsatisfiable core [2023-11-29 01:10:57,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:02,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592409755] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:12,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:11:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 41, 31] total 82 [2023-11-29 01:11:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99451680] [2023-11-29 01:11:12,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-11-29 01:11:12,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:12,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-11-29 01:11:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=6222, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 01:11:12,963 INFO L87 Difference]: Start difference. First operand 85953 states and 127552 transitions. Second operand has 83 states, 83 states have (on average 11.216867469879517) internal successors, (931), 82 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)