./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.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_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/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_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/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_796599a1-ed9d-4aa2-8b01-91e8c4581d64/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 e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:14:16,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:14:16,219 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 03:14:16,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:14:16,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:14:16,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:14:16,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:14:16,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:14:16,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:14:16,254 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:14:16,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:14:16,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:14:16,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:14:16,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:14:16,257 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:14:16,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:14:16,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:14:16,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:14:16,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:14:16,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:14:16,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:14:16,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:14:16,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:14:16,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:14:16,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:14:16,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:14:16,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:14:16,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:14:16,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:14:16,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:14:16,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:14:16,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:14:16,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:14:16,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:14:16,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:14:16,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:14:16,267 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:14:16,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:14:16,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:14:16,268 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_796599a1-ed9d-4aa2-8b01-91e8c4581d64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2023-11-29 03:14:16,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:14:16,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:14:16,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:14:16,540 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:14:16,540 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:14:16,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2023-11-29 03:14:19,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:14:19,415 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:14:19,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2023-11-29 03:14:19,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/data/97172eb09/fb72aaa548424d02ac4dda4af4a20ec0/FLAG420bfe209 [2023-11-29 03:14:19,436 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/data/97172eb09/fb72aaa548424d02ac4dda4af4a20ec0 [2023-11-29 03:14:19,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:14:19,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:14:19,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:14:19,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:14:19,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:14:19,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7324fb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19, skipping insertion in model container [2023-11-29 03:14:19,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:14:19,593 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_796599a1-ed9d-4aa2-8b01-91e8c4581d64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2023-11-29 03:14:19,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:14:19,667 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:14:19,676 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_796599a1-ed9d-4aa2-8b01-91e8c4581d64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2023-11-29 03:14:19,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:14:19,728 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:14:19,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19 WrapperNode [2023-11-29 03:14:19,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:14:19,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:14:19,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:14:19,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:14:19,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,797 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 369 [2023-11-29 03:14:19,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:14:19,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:14:19,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:14:19,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:14:19,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,838 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 03:14:19,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:14:19,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:14:19,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:14:19,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:14:19,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (1/1) ... [2023-11-29 03:14:19,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:14:19,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:19,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:14:19,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:14:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:14:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:14:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:14:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:14:20,049 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:14:20,051 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:14:20,457 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:14:20,505 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:14:20,506 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:14:20,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:14:20 BoogieIcfgContainer [2023-11-29 03:14:20,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:14:20,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:14:20,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:14:20,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:14:20,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:14:19" (1/3) ... [2023-11-29 03:14:20,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359ae75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:14:20, skipping insertion in model container [2023-11-29 03:14:20,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:14:19" (2/3) ... [2023-11-29 03:14:20,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359ae75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:14:20, skipping insertion in model container [2023-11-29 03:14:20,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:14:20" (3/3) ... [2023-11-29 03:14:20,516 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2023-11-29 03:14:20,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:14:20,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:14:20,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:14:20,595 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;@2b6c6c61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:14:20,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:14:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 03:14:20,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:20,608 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] [2023-11-29 03:14:20,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:20,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 849175086, now seen corresponding path program 1 times [2023-11-29 03:14:20,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:20,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378869612] [2023-11-29 03:14:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:21,090 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 03:14:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378869612] [2023-11-29 03:14:21,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378869612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:21,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:21,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506455914] [2023-11-29 03:14:21,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:21,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:14:21,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:14:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:14:21,132 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:21,181 INFO L93 Difference]: Finished difference Result 78 states and 126 transitions. [2023-11-29 03:14:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:14:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-11-29 03:14:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:21,190 INFO L225 Difference]: With dead ends: 78 [2023-11-29 03:14:21,190 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 03:14:21,192 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 03:14:21,196 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 199 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 03:14:21,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 199 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 03:14:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-29 03:14:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2023-11-29 03:14:21,227 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 24 [2023-11-29 03:14:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:21,227 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2023-11-29 03:14:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2023-11-29 03:14:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:14:21,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:21,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:21,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:14:21,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:21,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 556408540, now seen corresponding path program 1 times [2023-11-29 03:14:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13259446] [2023-11-29 03:14:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:21,367 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 03:14:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13259446] [2023-11-29 03:14:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13259446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132230463] [2023-11-29 03:14:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:21,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:14:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:21,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:14:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:14:21,371 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:21,400 INFO L93 Difference]: Finished difference Result 81 states and 124 transitions. [2023-11-29 03:14:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:14:21,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-29 03:14:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:21,402 INFO L225 Difference]: With dead ends: 81 [2023-11-29 03:14:21,402 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 03:14:21,402 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 03:14:21,404 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 197 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 03:14:21,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 197 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 03:14:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-11-29 03:14:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.5625) internal successors, (75), 48 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 75 transitions. [2023-11-29 03:14:21,412 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 75 transitions. Word has length 25 [2023-11-29 03:14:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:21,412 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 75 transitions. [2023-11-29 03:14:21,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 75 transitions. [2023-11-29 03:14:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 03:14:21,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:21,414 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] [2023-11-29 03:14:21,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:14:21,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:21,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:21,415 INFO L85 PathProgramCache]: Analyzing trace with hash -143424250, now seen corresponding path program 1 times [2023-11-29 03:14:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223658803] [2023-11-29 03:14:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:21,705 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 03:14:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223658803] [2023-11-29 03:14:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223658803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:21,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504505823] [2023-11-29 03:14:21,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:14:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:14:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:14:21,708 INFO L87 Difference]: Start difference. First operand 49 states and 75 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:21,758 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2023-11-29 03:14:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:14:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-11-29 03:14:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:21,760 INFO L225 Difference]: With dead ends: 89 [2023-11-29 03:14:21,760 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 03:14:21,760 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 03:14:21,762 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 85 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:21,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 140 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 03:14:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2023-11-29 03:14:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 48 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 74 transitions. [2023-11-29 03:14:21,768 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 74 transitions. Word has length 26 [2023-11-29 03:14:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:21,769 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 74 transitions. [2023-11-29 03:14:21,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2023-11-29 03:14:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:14:21,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:21,770 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] [2023-11-29 03:14:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:14:21,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:21,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1446934978, now seen corresponding path program 1 times [2023-11-29 03:14:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:21,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203440292] [2023-11-29 03:14:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203440292] [2023-11-29 03:14:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203440292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:22,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:22,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:14:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634226094] [2023-11-29 03:14:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:22,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:14:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:14:22,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:14:22,149 INFO L87 Difference]: Start difference. First operand 49 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:22,448 INFO L93 Difference]: Finished difference Result 157 states and 231 transitions. [2023-11-29 03:14:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:14:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-29 03:14:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:22,450 INFO L225 Difference]: With dead ends: 157 [2023-11-29 03:14:22,450 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 03:14:22,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:14:22,452 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 315 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:22,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 415 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:14:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 03:14:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 57. [2023-11-29 03:14:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 56 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 03:14:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 85 transitions. [2023-11-29 03:14:22,461 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 85 transitions. Word has length 27 [2023-11-29 03:14:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:22,461 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 85 transitions. [2023-11-29 03:14:22,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 85 transitions. [2023-11-29 03:14:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:14:22,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:22,463 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] [2023-11-29 03:14:22,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:14:22,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:22,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1053907968, now seen corresponding path program 1 times [2023-11-29 03:14:22,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:22,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109048448] [2023-11-29 03:14:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:22,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:22,705 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 03:14:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109048448] [2023-11-29 03:14:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109048448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:22,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:22,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230700571] [2023-11-29 03:14:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:22,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:14:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:22,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:14:22,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:14:22,708 INFO L87 Difference]: Start difference. First operand 57 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:22,773 INFO L93 Difference]: Finished difference Result 143 states and 207 transitions. [2023-11-29 03:14:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:14:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-29 03:14:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:22,775 INFO L225 Difference]: With dead ends: 143 [2023-11-29 03:14:22,775 INFO L226 Difference]: Without dead ends: 102 [2023-11-29 03:14:22,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:14:22,777 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 121 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:22,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 222 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-29 03:14:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2023-11-29 03:14:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 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 03:14:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 91 transitions. [2023-11-29 03:14:22,785 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 91 transitions. Word has length 27 [2023-11-29 03:14:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:22,786 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 91 transitions. [2023-11-29 03:14:22,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2023-11-29 03:14:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 03:14:22,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:22,787 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] [2023-11-29 03:14:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:14:22,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:22,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1272660130, now seen corresponding path program 1 times [2023-11-29 03:14:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:22,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610146973] [2023-11-29 03:14:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:22,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:22,902 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 03:14:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610146973] [2023-11-29 03:14:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610146973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:22,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046622473] [2023-11-29 03:14:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:22,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:14:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:14:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:14:22,905 INFO L87 Difference]: Start difference. First operand 63 states and 91 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:22,963 INFO L93 Difference]: Finished difference Result 149 states and 209 transitions. [2023-11-29 03:14:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:14:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-29 03:14:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:22,966 INFO L225 Difference]: With dead ends: 149 [2023-11-29 03:14:22,966 INFO L226 Difference]: Without dead ends: 102 [2023-11-29 03:14:22,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:14:22,968 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 138 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:22,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 187 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-29 03:14:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2023-11-29 03:14:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 69 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 100 transitions. [2023-11-29 03:14:22,976 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 100 transitions. Word has length 28 [2023-11-29 03:14:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:22,977 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 100 transitions. [2023-11-29 03:14:22,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 100 transitions. [2023-11-29 03:14:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 03:14:22,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:22,978 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] [2023-11-29 03:14:22,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:14:22,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:22,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash -920996932, now seen corresponding path program 1 times [2023-11-29 03:14:22,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:22,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384469971] [2023-11-29 03:14:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:22,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:23,085 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 03:14:23,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384469971] [2023-11-29 03:14:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384469971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:23,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:23,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381963668] [2023-11-29 03:14:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:14:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:14:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:14:23,087 INFO L87 Difference]: Start difference. First operand 70 states and 100 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:23,140 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2023-11-29 03:14:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:14:23,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-29 03:14:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:23,142 INFO L225 Difference]: With dead ends: 136 [2023-11-29 03:14:23,142 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 03:14:23,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:14:23,143 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 118 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:23,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 187 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 03:14:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2023-11-29 03:14:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2023-11-29 03:14:23,150 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 28 [2023-11-29 03:14:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:23,150 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2023-11-29 03:14:23,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2023-11-29 03:14:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 03:14:23,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:23,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:23,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:14:23,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:23,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1329022144, now seen corresponding path program 1 times [2023-11-29 03:14:23,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099350751] [2023-11-29 03:14:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:23,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:23,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099350751] [2023-11-29 03:14:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099350751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:23,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13479670] [2023-11-29 03:14:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:23,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:23,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:14:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:23,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 03:14:23,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:24,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:14:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13479670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:14:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2023-11-29 03:14:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177857631] [2023-11-29 03:14:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:14:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:14:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:14:24,141 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:24,342 INFO L93 Difference]: Finished difference Result 133 states and 185 transitions. [2023-11-29 03:14:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:14:24,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-11-29 03:14:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:24,344 INFO L225 Difference]: With dead ends: 133 [2023-11-29 03:14:24,344 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 03:14:24,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:14:24,345 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:24,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:14:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 03:14:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2023-11-29 03:14:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 78 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 107 transitions. [2023-11-29 03:14:24,353 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 107 transitions. Word has length 48 [2023-11-29 03:14:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:24,353 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 107 transitions. [2023-11-29 03:14:24,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 107 transitions. [2023-11-29 03:14:24,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 03:14:24,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:24,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:24,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:14:24,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:24,561 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:24,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash -493938264, now seen corresponding path program 1 times [2023-11-29 03:14:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:24,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843553394] [2023-11-29 03:14:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:24,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:14:25,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:25,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843553394] [2023-11-29 03:14:25,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843553394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:25,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541842667] [2023-11-29 03:14:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:25,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:25,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:25,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:14:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:25,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 03:14:25,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:26,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541842667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:26,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-11-29 03:14:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770046642] [2023-11-29 03:14:26,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 03:14:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 03:14:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:14:26,819 INFO L87 Difference]: Start difference. First operand 79 states and 107 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:29,247 INFO L93 Difference]: Finished difference Result 256 states and 352 transitions. [2023-11-29 03:14:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 03:14:29,248 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 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 49 [2023-11-29 03:14:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:29,250 INFO L225 Difference]: With dead ends: 256 [2023-11-29 03:14:29,250 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 03:14:29,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 03:14:29,253 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1120 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:29,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 230 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:14:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 03:14:29,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 85. [2023-11-29 03:14:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2023-11-29 03:14:29,261 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 49 [2023-11-29 03:14:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:29,262 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2023-11-29 03:14:29,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2023-11-29 03:14:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 03:14:29,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:29,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:29,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:14:29,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:29,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1281069098, now seen corresponding path program 1 times [2023-11-29 03:14:29,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:29,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234047111] [2023-11-29 03:14:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:29,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:30,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234047111] [2023-11-29 03:14:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234047111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220885465] [2023-11-29 03:14:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:30,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:30,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:30,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:30,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:14:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:30,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:14:30,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:14:30,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:14:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220885465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:31,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:31,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-29 03:14:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156198592] [2023-11-29 03:14:31,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:14:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:14:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:14:31,125 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:31,883 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-11-29 03:14:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:14:31,883 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-29 03:14:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:31,884 INFO L225 Difference]: With dead ends: 187 [2023-11-29 03:14:31,884 INFO L226 Difference]: Without dead ends: 134 [2023-11-29 03:14:31,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=920, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:14:31,886 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 459 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:31,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 146 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:14:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-29 03:14:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 98. [2023-11-29 03:14:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 97 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 132 transitions. [2023-11-29 03:14:31,894 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 132 transitions. Word has length 49 [2023-11-29 03:14:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:31,895 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 132 transitions. [2023-11-29 03:14:31,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 132 transitions. [2023-11-29 03:14:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 03:14:31,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:31,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:31,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:14:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:32,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:32,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -142334648, now seen corresponding path program 1 times [2023-11-29 03:14:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619247710] [2023-11-29 03:14:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619247710] [2023-11-29 03:14:32,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619247710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569882199] [2023-11-29 03:14:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:32,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:32,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:14:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:32,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:14:32,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:32,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569882199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:33,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 18 [2023-11-29 03:14:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791051329] [2023-11-29 03:14:33,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:14:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:14:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:14:33,070 INFO L87 Difference]: Start difference. First operand 98 states and 132 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:33,363 INFO L93 Difference]: Finished difference Result 169 states and 227 transitions. [2023-11-29 03:14:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:14:33,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 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 49 [2023-11-29 03:14:33,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:33,365 INFO L225 Difference]: With dead ends: 169 [2023-11-29 03:14:33,365 INFO L226 Difference]: Without dead ends: 114 [2023-11-29 03:14:33,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:14:33,366 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 293 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:33,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 614 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:14:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-29 03:14:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2023-11-29 03:14:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.351063829787234) internal successors, (127), 94 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2023-11-29 03:14:33,375 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 49 [2023-11-29 03:14:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:33,376 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2023-11-29 03:14:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2023-11-29 03:14:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:14:33,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:33,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:14:33,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:14:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:33,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:33,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash -118283314, now seen corresponding path program 1 times [2023-11-29 03:14:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:33,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865567185] [2023-11-29 03:14:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865567185] [2023-11-29 03:14:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865567185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612487919] [2023-11-29 03:14:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:35,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:35,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:35,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:35,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:14:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:35,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 03:14:35,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:35,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:36,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612487919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:36,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:36,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 31 [2023-11-29 03:14:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797985960] [2023-11-29 03:14:36,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 03:14:36,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 03:14:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:14:36,826 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 32 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:39,411 INFO L93 Difference]: Finished difference Result 663 states and 870 transitions. [2023-11-29 03:14:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-29 03:14:39,412 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-29 03:14:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:39,415 INFO L225 Difference]: With dead ends: 663 [2023-11-29 03:14:39,415 INFO L226 Difference]: Without dead ends: 611 [2023-11-29 03:14:39,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2070, Invalid=10362, Unknown=0, NotChecked=0, Total=12432 [2023-11-29 03:14:39,420 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1427 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:39,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 591 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:14:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-29 03:14:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 215. [2023-11-29 03:14:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.3644859813084111) internal successors, (292), 214 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 292 transitions. [2023-11-29 03:14:39,439 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 292 transitions. Word has length 69 [2023-11-29 03:14:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:39,439 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 292 transitions. [2023-11-29 03:14:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 292 transitions. [2023-11-29 03:14:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:14:39,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:39,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:14:39,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:14:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:39,641 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:39,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1541627478, now seen corresponding path program 1 times [2023-11-29 03:14:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:39,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707846503] [2023-11-29 03:14:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:40,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707846503] [2023-11-29 03:14:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707846503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035105317] [2023-11-29 03:14:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:40,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:40,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:40,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:40,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:14:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:40,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 03:14:40,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 23 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:40,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035105317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:41,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:41,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 24 [2023-11-29 03:14:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851635438] [2023-11-29 03:14:41,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:41,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:14:41,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:41,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:14:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:14:41,112 INFO L87 Difference]: Start difference. First operand 215 states and 292 transitions. Second operand has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:42,295 INFO L93 Difference]: Finished difference Result 717 states and 973 transitions. [2023-11-29 03:14:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 03:14:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-29 03:14:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:42,298 INFO L225 Difference]: With dead ends: 717 [2023-11-29 03:14:42,298 INFO L226 Difference]: Without dead ends: 548 [2023-11-29 03:14:42,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=754, Invalid=3028, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 03:14:42,300 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1328 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:42,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 333 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:14:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-29 03:14:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 317. [2023-11-29 03:14:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3544303797468353) internal successors, (428), 316 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 03:14:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 428 transitions. [2023-11-29 03:14:42,322 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 428 transitions. Word has length 69 [2023-11-29 03:14:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:42,323 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 428 transitions. [2023-11-29 03:14:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 428 transitions. [2023-11-29 03:14:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:14:42,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:42,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:14:42,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:14:42,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:42,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:42,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 290554674, now seen corresponding path program 1 times [2023-11-29 03:14:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793699063] [2023-11-29 03:14:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:43,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:43,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793699063] [2023-11-29 03:14:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793699063] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:43,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896975445] [2023-11-29 03:14:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:43,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:43,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:43,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:14:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:43,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-29 03:14:43,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:43,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896975445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:44,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:44,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 10] total 27 [2023-11-29 03:14:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518782618] [2023-11-29 03:14:44,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:44,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:14:44,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:14:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:14:44,215 INFO L87 Difference]: Start difference. First operand 317 states and 428 transitions. Second operand has 27 states, 27 states have (on average 7.074074074074074) internal successors, (191), 27 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:45,696 INFO L93 Difference]: Finished difference Result 1222 states and 1631 transitions. [2023-11-29 03:14:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 03:14:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.074074074074074) internal successors, (191), 27 states have internal predecessors, (191), 0 states have call successors, (0), 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 70 [2023-11-29 03:14:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:45,700 INFO L225 Difference]: With dead ends: 1222 [2023-11-29 03:14:45,700 INFO L226 Difference]: Without dead ends: 937 [2023-11-29 03:14:45,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=567, Invalid=2973, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 03:14:45,702 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 363 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:45,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 527 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:14:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-11-29 03:14:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 527. [2023-11-29 03:14:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3593155893536122) internal successors, (715), 526 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 715 transitions. [2023-11-29 03:14:45,756 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 715 transitions. Word has length 70 [2023-11-29 03:14:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:45,757 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 715 transitions. [2023-11-29 03:14:45,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.074074074074074) internal successors, (191), 27 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 715 transitions. [2023-11-29 03:14:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:14:45,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:45,759 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:14:45,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:14:45,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:45,965 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:45,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1554812492, now seen corresponding path program 1 times [2023-11-29 03:14:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981410074] [2023-11-29 03:14:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:14:46,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:46,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981410074] [2023-11-29 03:14:46,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981410074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:14:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841583656] [2023-11-29 03:14:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:14:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:14:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:14:46,418 INFO L87 Difference]: Start difference. First operand 527 states and 715 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:46,505 INFO L93 Difference]: Finished difference Result 1031 states and 1401 transitions. [2023-11-29 03:14:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:14:46,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 70 [2023-11-29 03:14:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:46,508 INFO L225 Difference]: With dead ends: 1031 [2023-11-29 03:14:46,508 INFO L226 Difference]: Without dead ends: 536 [2023-11-29 03:14:46,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:14:46,510 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:46,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 184 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:14:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-29 03:14:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 534. [2023-11-29 03:14:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.3583489681050656) internal successors, (724), 533 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 724 transitions. [2023-11-29 03:14:46,557 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 724 transitions. Word has length 70 [2023-11-29 03:14:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:46,558 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 724 transitions. [2023-11-29 03:14:46,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 724 transitions. [2023-11-29 03:14:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:14:46,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:46,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:14:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:14:46,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:46,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1291892940, now seen corresponding path program 1 times [2023-11-29 03:14:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617006091] [2023-11-29 03:14:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:47,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617006091] [2023-11-29 03:14:47,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617006091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:47,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414388189] [2023-11-29 03:14:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:47,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:47,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:47,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:47,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:14:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:47,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 03:14:47,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:47,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:48,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414388189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:48,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 35 [2023-11-29 03:14:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626358068] [2023-11-29 03:14:48,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:48,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 03:14:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 03:14:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:14:48,288 INFO L87 Difference]: Start difference. First operand 534 states and 724 transitions. Second operand has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 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 03:15:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:03,901 INFO L93 Difference]: Finished difference Result 4493 states and 6154 transitions. [2023-11-29 03:15:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-11-29 03:15:03,902 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 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 70 [2023-11-29 03:15:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:03,917 INFO L225 Difference]: With dead ends: 4493 [2023-11-29 03:15:03,917 INFO L226 Difference]: Without dead ends: 3998 [2023-11-29 03:15:03,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24432 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=7732, Invalid=57038, Unknown=0, NotChecked=0, Total=64770 [2023-11-29 03:15:03,928 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1884 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 3683 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 3727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:03,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 1223 Invalid, 3727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3683 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 03:15:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2023-11-29 03:15:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 1004. [2023-11-29 03:15:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.3519441674975075) internal successors, (1356), 1003 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1356 transitions. [2023-11-29 03:15:04,053 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1356 transitions. Word has length 70 [2023-11-29 03:15:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:04,053 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1356 transitions. [2023-11-29 03:15:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 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 03:15:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1356 transitions. [2023-11-29 03:15:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:15:04,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:04,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:04,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:15:04,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:04,256 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -131451224, now seen corresponding path program 1 times [2023-11-29 03:15:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023620407] [2023-11-29 03:15:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:15:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023620407] [2023-11-29 03:15:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023620407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:05,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:15:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624167211] [2023-11-29 03:15:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:05,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:15:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:15:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:15:05,112 INFO L87 Difference]: Start difference. First operand 1004 states and 1356 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:05,285 INFO L93 Difference]: Finished difference Result 1974 states and 2666 transitions. [2023-11-29 03:15:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:15:05,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 70 [2023-11-29 03:15:05,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:05,290 INFO L225 Difference]: With dead ends: 1974 [2023-11-29 03:15:05,291 INFO L226 Difference]: Without dead ends: 1006 [2023-11-29 03:15:05,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:15:05,292 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 69 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:05,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 61 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:15:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-11-29 03:15:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 999. [2023-11-29 03:15:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.3517034068136273) internal successors, (1349), 998 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1349 transitions. [2023-11-29 03:15:05,382 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1349 transitions. Word has length 70 [2023-11-29 03:15:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:05,383 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1349 transitions. [2023-11-29 03:15:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1349 transitions. [2023-11-29 03:15:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 03:15:05,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:05,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 03:15:05,385 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:05,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash -112199664, now seen corresponding path program 2 times [2023-11-29 03:15:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213034534] [2023-11-29 03:15:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:06,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:06,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213034534] [2023-11-29 03:15:06,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213034534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:06,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352865338] [2023-11-29 03:15:06,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:15:06,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:06,106 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:06,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:15:06,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:15:06,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:15:06,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 03:15:06,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 58 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:15:07,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 78 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:15:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352865338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:07,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:07,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2023-11-29 03:15:07,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547958270] [2023-11-29 03:15:07,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:07,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:15:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:15:07,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:15:07,501 INFO L87 Difference]: Start difference. First operand 999 states and 1349 transitions. Second operand has 24 states, 24 states have (on average 8.208333333333334) internal successors, (197), 23 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 03:15:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:08,064 INFO L93 Difference]: Finished difference Result 2764 states and 3778 transitions. [2023-11-29 03:15:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:15:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.208333333333334) internal successors, (197), 23 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 90 [2023-11-29 03:15:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:08,071 INFO L225 Difference]: With dead ends: 2764 [2023-11-29 03:15:08,071 INFO L226 Difference]: Without dead ends: 1801 [2023-11-29 03:15:08,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 03:15:08,073 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 473 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:08,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 193 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:15:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-11-29 03:15:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1525. [2023-11-29 03:15:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.3412073490813647) internal successors, (2044), 1524 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2044 transitions. [2023-11-29 03:15:08,222 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2044 transitions. Word has length 90 [2023-11-29 03:15:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:08,222 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2044 transitions. [2023-11-29 03:15:08,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.208333333333334) internal successors, (197), 23 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 03:15:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2044 transitions. [2023-11-29 03:15:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 03:15:08,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:08,225 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:08,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:15:08,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:15:08,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:08,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:08,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1930907518, now seen corresponding path program 2 times [2023-11-29 03:15:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:08,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261196580] [2023-11-29 03:15:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:08,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:15:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261196580] [2023-11-29 03:15:09,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261196580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:09,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205785686] [2023-11-29 03:15:09,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:15:09,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:09,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:09,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:09,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:15:09,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:15:09,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:15:09,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 03:15:09,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 03:15:10,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:15:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205785686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:10,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 14] total 27 [2023-11-29 03:15:10,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664783507] [2023-11-29 03:15:10,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:10,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:15:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:15:10,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:15:10,750 INFO L87 Difference]: Start difference. First operand 1525 states and 2044 transitions. Second operand has 27 states, 27 states have (on average 7.481481481481482) internal successors, (202), 27 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 03:15:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:12,734 INFO L93 Difference]: Finished difference Result 5124 states and 6846 transitions. [2023-11-29 03:15:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 03:15:12,735 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.481481481481482) internal successors, (202), 27 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 91 [2023-11-29 03:15:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:12,748 INFO L225 Difference]: With dead ends: 5124 [2023-11-29 03:15:12,748 INFO L226 Difference]: Without dead ends: 3635 [2023-11-29 03:15:12,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=899, Invalid=4651, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 03:15:12,751 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 695 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:12,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 411 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:15:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2023-11-29 03:15:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 2099. [2023-11-29 03:15:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.313155386081983) internal successors, (2755), 2098 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2755 transitions. [2023-11-29 03:15:12,986 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2755 transitions. Word has length 91 [2023-11-29 03:15:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:12,986 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 2755 transitions. [2023-11-29 03:15:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.481481481481482) internal successors, (202), 27 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 03:15:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2755 transitions. [2023-11-29 03:15:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 03:15:12,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:12,990 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:12,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:13,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:13,192 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:13,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash -82628894, now seen corresponding path program 2 times [2023-11-29 03:15:13,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:13,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478755291] [2023-11-29 03:15:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:13,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:15:14,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478755291] [2023-11-29 03:15:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478755291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896198335] [2023-11-29 03:15:14,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:15:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:14,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:14,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:14,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:15:15,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:15:15,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:15:15,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:15:15,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 78 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:15:15,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:15:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896198335] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:15,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 13] total 26 [2023-11-29 03:15:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915545444] [2023-11-29 03:15:15,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:15:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:15:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:15:15,949 INFO L87 Difference]: Start difference. First operand 2099 states and 2755 transitions. Second operand has 26 states, 26 states have (on average 8.23076923076923) internal successors, (214), 26 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:18,981 INFO L93 Difference]: Finished difference Result 5056 states and 6598 transitions. [2023-11-29 03:15:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-29 03:15:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.23076923076923) internal successors, (214), 26 states have internal predecessors, (214), 0 states have call successors, (0), 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 03:15:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:18,992 INFO L225 Difference]: With dead ends: 5056 [2023-11-29 03:15:18,992 INFO L226 Difference]: Without dead ends: 2993 [2023-11-29 03:15:18,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1029, Invalid=6981, Unknown=0, NotChecked=0, Total=8010 [2023-11-29 03:15:18,995 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 854 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:18,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1104 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:15:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2023-11-29 03:15:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1946. [2023-11-29 03:15:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 1.2724935732647815) internal successors, (2475), 1945 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2475 transitions. [2023-11-29 03:15:19,159 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2475 transitions. Word has length 91 [2023-11-29 03:15:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:19,159 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2475 transitions. [2023-11-29 03:15:19,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.23076923076923) internal successors, (214), 26 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2475 transitions. [2023-11-29 03:15:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 03:15:19,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:19,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:19,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:19,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:19,363 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:19,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1449210208, now seen corresponding path program 3 times [2023-11-29 03:15:19,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:19,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230346478] [2023-11-29 03:15:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:19,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 140 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 03:15:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:19,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230346478] [2023-11-29 03:15:19,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230346478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:19,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605717023] [2023-11-29 03:15:19,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:15:19,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:19,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:19,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:15:20,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:15:20,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:15:20,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-29 03:15:20,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-29 03:15:21,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 60 proven. 43 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 03:15:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605717023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:22,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:22,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 29 [2023-11-29 03:15:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117679736] [2023-11-29 03:15:22,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:22,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 03:15:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 03:15:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:15:22,587 INFO L87 Difference]: Start difference. First operand 1946 states and 2475 transitions. Second operand has 29 states, 29 states have (on average 7.0344827586206895) internal successors, (204), 29 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 03:15:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:27,246 INFO L93 Difference]: Finished difference Result 4837 states and 6119 transitions. [2023-11-29 03:15:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-29 03:15:27,247 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.0344827586206895) internal successors, (204), 29 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 111 [2023-11-29 03:15:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:27,257 INFO L225 Difference]: With dead ends: 4837 [2023-11-29 03:15:27,257 INFO L226 Difference]: Without dead ends: 2927 [2023-11-29 03:15:27,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6777 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3208, Invalid=16532, Unknown=0, NotChecked=0, Total=19740 [2023-11-29 03:15:27,260 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2069 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:27,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 808 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:15:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2023-11-29 03:15:27,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1885. [2023-11-29 03:15:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 1.2515923566878981) internal successors, (2358), 1884 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2358 transitions. [2023-11-29 03:15:27,369 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2358 transitions. Word has length 111 [2023-11-29 03:15:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:27,369 INFO L495 AbstractCegarLoop]: Abstraction has 1885 states and 2358 transitions. [2023-11-29 03:15:27,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.0344827586206895) internal successors, (204), 29 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 03:15:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2358 transitions. [2023-11-29 03:15:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 03:15:27,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:27,371 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:27,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:15:27,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:15:27,571 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:27,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash -813102974, now seen corresponding path program 1 times [2023-11-29 03:15:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:27,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976580610] [2023-11-29 03:15:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:27,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 03:15:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:28,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976580610] [2023-11-29 03:15:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976580610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900138214] [2023-11-29 03:15:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:28,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:15:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:15:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:15:28,301 INFO L87 Difference]: Start difference. First operand 1885 states and 2358 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 03:15:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:28,342 INFO L93 Difference]: Finished difference Result 1964 states and 2443 transitions. [2023-11-29 03:15:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:15:28,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 133 [2023-11-29 03:15:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:28,343 INFO L225 Difference]: With dead ends: 1964 [2023-11-29 03:15:28,343 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 03:15:28,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:15:28,345 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 25 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:28,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 209 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:15:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 03:15:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 03:15:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:15:28,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2023-11-29 03:15:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:28,346 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:15:28,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 03:15:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:15:28,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 03:15:28,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:15:28,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 03:15:28,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L184-2(line 184) no Hoare annotation was computed. [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L184-4(line 184) no Hoare annotation was computed. [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-29 03:15:28,873 INFO L895 garLoopResultBuilder]: At program point L87-2(lines 87 198) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~var_12~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~state_28~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~state_8~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~state_60~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~state_15~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~var_22~0#1| 1)) (.cse6 (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~var_7~0#1| 0))) (or (and (<= |ULTIMATE.start_main_~var_89~0#1| (* (div |ULTIMATE.start_main_~var_89~0#1| 256) 256)) (= |ULTIMATE.start_main_~var_24_arg_0~0#1| 1) .cse0 .cse1 (= |ULTIMATE.start_main_~next_74_arg_1~0#1| 0) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~next_80_arg_1~0#1| 0) .cse5 (<= |ULTIMATE.start_main_~var_87~0#1| (* (div |ULTIMATE.start_main_~var_87~0#1| 256) 256)) .cse6 .cse7 (= |ULTIMATE.start_main_~next_88_arg_1~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~state_26~0#1| 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L87-3(lines 87 198) no Hoare annotation was computed. [2023-11-29 03:15:28,873 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L137-2(line 137) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L137-4(line 137) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L138(line 138) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L138-2(line 138) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L72-2(line 72) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L138-4(line 138) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L72-4(line 72) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-11-29 03:15:28,874 INFO L899 garLoopResultBuilder]: For program point L73-2(line 73) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L73-4(line 73) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L74-2(line 74) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L74-4(line 74) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L132(line 132) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L132-2(line 132) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L132-4(line 132) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L190(line 190) no Hoare annotation was computed. [2023-11-29 03:15:28,875 INFO L899 garLoopResultBuilder]: For program point L190-2(line 190) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L190-4(line 190) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L75-2(line 75) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L75-4(line 75) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L125-2(line 125) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L125-4(line 125) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L117-2(line 117) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L117-4(line 117) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2023-11-29 03:15:28,876 INFO L899 garLoopResultBuilder]: For program point L167-2(line 167) no Hoare annotation was computed. [2023-11-29 03:15:28,877 INFO L899 garLoopResultBuilder]: For program point L167-4(line 167) no Hoare annotation was computed. [2023-11-29 03:15:28,879 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:28,881 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:15:28,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:15:28 BoogieIcfgContainer [2023-11-29 03:15:28,893 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:15:28,894 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:15:28,894 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:15:28,894 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:15:28,895 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:14:20" (3/4) ... [2023-11-29 03:15:28,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:15:28,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-29 03:15:28,911 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 03:15:28,912 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 03:15:28,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 03:15:29,041 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:15:29,042 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:15:29,042 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:15:29,043 INFO L158 Benchmark]: Toolchain (without parser) took 69603.12ms. Allocated memory was 155.2MB in the beginning and 478.2MB in the end (delta: 323.0MB). Free memory was 114.8MB in the beginning and 427.0MB in the end (delta: -312.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,043 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:15:29,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.17ms. Allocated memory is still 155.2MB. Free memory was 114.3MB in the beginning and 100.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.28ms. Allocated memory is still 155.2MB. Free memory was 100.1MB in the beginning and 93.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,044 INFO L158 Benchmark]: Boogie Preprocessor took 82.67ms. Allocated memory is still 155.2MB. Free memory was 93.8MB in the beginning and 89.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,045 INFO L158 Benchmark]: RCFGBuilder took 625.66ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 89.6MB in the beginning and 196.1MB in the end (delta: -106.4MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,045 INFO L158 Benchmark]: TraceAbstraction took 68383.85ms. Allocated memory was 228.6MB in the beginning and 478.2MB in the end (delta: 249.6MB). Free memory was 195.0MB in the beginning and 435.4MB in the end (delta: -240.4MB). Peak memory consumption was 299.4MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,046 INFO L158 Benchmark]: Witness Printer took 148.27ms. Allocated memory is still 478.2MB. Free memory was 435.4MB in the beginning and 427.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 03:15:29,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.17ms. Allocated memory is still 155.2MB. Free memory was 114.3MB in the beginning and 100.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.28ms. Allocated memory is still 155.2MB. Free memory was 100.1MB in the beginning and 93.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.67ms. Allocated memory is still 155.2MB. Free memory was 93.8MB in the beginning and 89.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 625.66ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 89.6MB in the beginning and 196.1MB in the end (delta: -106.4MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. * TraceAbstraction took 68383.85ms. Allocated memory was 228.6MB in the beginning and 478.2MB in the end (delta: 249.6MB). Free memory was 195.0MB in the beginning and 435.4MB in the end (delta: -240.4MB). Peak memory consumption was 299.4MB. Max. memory is 16.1GB. * Witness Printer took 148.27ms. Allocated memory is still 478.2MB. Free memory was 435.4MB in the beginning and 427.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.3s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 35.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12003 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12003 mSDsluCounter, 8251 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7174 mSDsCounter, 320 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16033 IncrementalHoareTripleChecker+Invalid, 16353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 320 mSolverCounterUnsat, 1077 mSDtfsCounter, 16033 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2644 GetRequests, 1635 SyntacticMatches, 11 SemanticMatches, 998 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42144 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2099occurred in iteration=19, InterpolantAutomatonStates: 781, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 8292 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 80 HoareAnnotationTreeSize, 1 FomulaSimplifications, 33971 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 1 FomulaSimplificationsInter, 566 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 2170 NumberOfCodeBlocks, 2107 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2933 ConstructedInterpolants, 0 QuantifiedInterpolants, 21859 SizeOfPredicates, 216 NumberOfNonLiveVariables, 6318 ConjunctsInSsa, 607 ConjunctsInUnsatCore, 45 InterpolantComputations, 11 PerfectInterpolantSequences, 2118/2471 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: (((((((((((((((var_89 <= ((var_89 / 256) * 256)) && (var_24_arg_0 == 1)) && (var_12 == 1)) && (state_28 == 0)) && (next_74_arg_1 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (next_80_arg_1 == 0)) && (var_22 == 1)) && (var_87 <= ((var_87 / 256) * 256))) && (mask_SORT_1 == 1)) && (var_7 == 0)) && (next_88_arg_1 == 0)) || (((((((((var_12 == 1) && (state_28 == 0)) && (state_26 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-29 03:15:29,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796599a1-ed9d-4aa2-8b01-91e8c4581d64/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE