./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/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_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fc535726c0c0c24faa254cc99668420ac8f1bc92fcabb29a3cfdd5b58c68005d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:14:51,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:14:51,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:14:51,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:14:51,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:14:51,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:14:51,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:14:51,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:14:51,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:14:51,354 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:14:51,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:14:51,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:14:51,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:14:51,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:14:51,357 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:14:51,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:14:51,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:14:51,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:14:51,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:14:51,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:14:51,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:14:51,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:14:51,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:14:51,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:14:51,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:14:51,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:14:51,363 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:14:51,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:14:51,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:14:51,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:14:51,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:14:51,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:14:51,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:14:51,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:14:51,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:14:51,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:14:51,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:14:51,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:14:51,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:14:51,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:14:51,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:14:51,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:14:51,367 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_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc535726c0c0c24faa254cc99668420ac8f1bc92fcabb29a3cfdd5b58c68005d [2023-11-29 02:14:51,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:14:51,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:14:51,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:14:51,624 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:14:51,624 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:14:51,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i [2023-11-29 02:14:54,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:14:54,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:14:54,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i [2023-11-29 02:14:54,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/data/74485a8fe/e9341e8066ef4bbbb6696f5a701ee4b5/FLAG58dcc7568 [2023-11-29 02:14:54,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/data/74485a8fe/e9341e8066ef4bbbb6696f5a701ee4b5 [2023-11-29 02:14:54,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:14:54,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:14:54,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:14:54,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:14:54,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:14:54,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:14:54" (1/1) ... [2023-11-29 02:14:54,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2fe940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:54, skipping insertion in model container [2023-11-29 02:14:54,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:14:54" (1/1) ... [2023-11-29 02:14:54,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:14:54,852 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_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i[916,929] [2023-11-29 02:14:55,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:14:55,022 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:14:55,034 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_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i[916,929] [2023-11-29 02:14:55,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:14:55,139 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:14:55,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55 WrapperNode [2023-11-29 02:14:55,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:14:55,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:14:55,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:14:55,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:14:55,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,232 INFO L138 Inliner]: procedures = 26, calls = 110, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 751 [2023-11-29 02:14:55,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:14:55,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:14:55,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:14:55,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:14:55,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,305 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:14:55,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:14:55,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:14:55,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:14:55,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:14:55,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (1/1) ... [2023-11-29 02:14:55,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:14:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:55,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:14:55,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:14:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:14:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:14:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:14:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:14:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:14:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:14:55,593 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:14:55,596 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:14:56,466 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:14:56,522 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:14:56,522 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:14:56,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:14:56 BoogieIcfgContainer [2023-11-29 02:14:56,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:14:56,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:14:56,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:14:56,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:14:56,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:14:54" (1/3) ... [2023-11-29 02:14:56,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342ae380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:14:56, skipping insertion in model container [2023-11-29 02:14:56,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:14:55" (2/3) ... [2023-11-29 02:14:56,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342ae380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:14:56, skipping insertion in model container [2023-11-29 02:14:56,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:14:56" (3/3) ... [2023-11-29 02:14:56,530 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-40.i [2023-11-29 02:14:56,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:14:56,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:14:56,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:14:56,598 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;@d3ec44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:14:56,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:14:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 202 states have (on average 1.6386138613861385) internal successors, (331), 203 states have internal predecessors, (331), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 02:14:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-11-29 02:14:56,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:56,640 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:56,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:56,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 121642661, now seen corresponding path program 1 times [2023-11-29 02:14:56,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:56,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828886533] [2023-11-29 02:14:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:56,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:57,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828886533] [2023-11-29 02:14:57,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:14:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615167534] [2023-11-29 02:14:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:57,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:57,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:57,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:14:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:57,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:14:57,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 18432 trivial. 0 not checked. [2023-11-29 02:14:57,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:14:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615167534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:57,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:57,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:14:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504489097] [2023-11-29 02:14:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:57,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:14:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:14:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:14:57,588 INFO L87 Difference]: Start difference. First operand has 302 states, 202 states have (on average 1.6386138613861385) internal successors, (331), 203 states have internal predecessors, (331), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-29 02:14:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:57,670 INFO L93 Difference]: Finished difference Result 601 states and 1145 transitions. [2023-11-29 02:14:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:14:57,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 2 states have call successors, (97) Word has length 625 [2023-11-29 02:14:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:57,686 INFO L225 Difference]: With dead ends: 601 [2023-11-29 02:14:57,686 INFO L226 Difference]: Without dead ends: 300 [2023-11-29 02:14:57,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:14:57,697 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:57,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 513 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-29 02:14:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-11-29 02:14:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 201 states have (on average 1.6019900497512438) internal successors, (322), 201 states have internal predecessors, (322), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 02:14:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 516 transitions. [2023-11-29 02:14:57,791 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 516 transitions. Word has length 625 [2023-11-29 02:14:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:57,792 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 516 transitions. [2023-11-29 02:14:57,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-29 02:14:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 516 transitions. [2023-11-29 02:14:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:14:57,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:57,812 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:57,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:14:58,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:14:58,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:58,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:58,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1796337380, now seen corresponding path program 1 times [2023-11-29 02:14:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338402315] [2023-11-29 02:14:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:58,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:14:58,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104604110] [2023-11-29 02:14:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:58,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:58,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:58,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:58,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:14:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:58,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:14:58,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:14:58,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:14:58,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:58,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338402315] [2023-11-29 02:14:58,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:14:58,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104604110] [2023-11-29 02:14:58,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104604110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:58,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:58,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:58,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345962064] [2023-11-29 02:14:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:58,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:58,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:58,677 INFO L87 Difference]: Start difference. First operand 300 states and 516 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:14:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:58,731 INFO L93 Difference]: Finished difference Result 599 states and 1031 transitions. [2023-11-29 02:14:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:14:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:58,739 INFO L225 Difference]: With dead ends: 599 [2023-11-29 02:14:58,739 INFO L226 Difference]: Without dead ends: 300 [2023-11-29 02:14:58,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:58,742 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 6 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1014 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 02:14:58,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1014 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-29 02:14:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-11-29 02:14:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 201 states have (on average 1.5970149253731343) internal successors, (321), 201 states have internal predecessors, (321), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 02:14:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 515 transitions. [2023-11-29 02:14:58,781 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 515 transitions. Word has length 626 [2023-11-29 02:14:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:58,784 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 515 transitions. [2023-11-29 02:14:58,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:14:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 515 transitions. [2023-11-29 02:14:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:14:58,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:58,822 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:58,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:14:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:59,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:59,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash -723622554, now seen corresponding path program 1 times [2023-11-29 02:14:59,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:59,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885330816] [2023-11-29 02:14:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:59,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:59,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:14:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179749382] [2023-11-29 02:14:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:59,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:59,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:14:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:59,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:14:59,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:14:59,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:14:59,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885330816] [2023-11-29 02:14:59,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:14:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179749382] [2023-11-29 02:14:59,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179749382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:14:59,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:14:59,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:14:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547194693] [2023-11-29 02:14:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:14:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:14:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:59,705 INFO L87 Difference]: Start difference. First operand 300 states and 515 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:14:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:59,815 INFO L93 Difference]: Finished difference Result 868 states and 1484 transitions. [2023-11-29 02:14:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:14:59,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:14:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:59,825 INFO L225 Difference]: With dead ends: 868 [2023-11-29 02:14:59,825 INFO L226 Difference]: Without dead ends: 569 [2023-11-29 02:14:59,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:14:59,828 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 411 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1301 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 02:14:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1301 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:14:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-11-29 02:14:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 372. [2023-11-29 02:14:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 273 states have (on average 1.6703296703296704) internal successors, (456), 273 states have internal predecessors, (456), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 02:14:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 650 transitions. [2023-11-29 02:14:59,884 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 650 transitions. Word has length 626 [2023-11-29 02:14:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:59,886 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 650 transitions. [2023-11-29 02:14:59,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:14:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 650 transitions. [2023-11-29 02:14:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:14:59,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:59,893 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:59,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:15:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:00,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:00,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1577200036, now seen corresponding path program 1 times [2023-11-29 02:15:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008721775] [2023-11-29 02:15:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:00,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:00,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514923237] [2023-11-29 02:15:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:00,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:00,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:00,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:00,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:15:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:00,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:15:00,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:00,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:00,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008721775] [2023-11-29 02:15:00,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:00,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514923237] [2023-11-29 02:15:00,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514923237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:00,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:00,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:00,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768977836] [2023-11-29 02:15:00,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:00,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:00,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:00,675 INFO L87 Difference]: Start difference. First operand 372 states and 650 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:00,740 INFO L93 Difference]: Finished difference Result 926 states and 1593 transitions. [2023-11-29 02:15:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:15:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:00,747 INFO L225 Difference]: With dead ends: 926 [2023-11-29 02:15:00,748 INFO L226 Difference]: Without dead ends: 555 [2023-11-29 02:15:00,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:00,750 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 275 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:00,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1011 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-29 02:15:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 552. [2023-11-29 02:15:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 365 states have (on average 1.5616438356164384) internal successors, (570), 366 states have internal predecessors, (570), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 183 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-29 02:15:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 938 transitions. [2023-11-29 02:15:00,828 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 938 transitions. Word has length 626 [2023-11-29 02:15:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:00,830 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 938 transitions. [2023-11-29 02:15:00,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 938 transitions. [2023-11-29 02:15:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:00,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:00,837 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:00,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:15:01,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:01,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:01,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2140450472, now seen corresponding path program 1 times [2023-11-29 02:15:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467565453] [2023-11-29 02:15:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:01,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:01,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650198460] [2023-11-29 02:15:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:01,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:01,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:01,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:15:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:01,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:15:01,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:01,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467565453] [2023-11-29 02:15:01,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:01,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650198460] [2023-11-29 02:15:01,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650198460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:01,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:01,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409589502] [2023-11-29 02:15:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:01,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:01,539 INFO L87 Difference]: Start difference. First operand 552 states and 938 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:01,631 INFO L93 Difference]: Finished difference Result 1650 states and 2804 transitions. [2023-11-29 02:15:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:15:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:01,640 INFO L225 Difference]: With dead ends: 1650 [2023-11-29 02:15:01,640 INFO L226 Difference]: Without dead ends: 1099 [2023-11-29 02:15:01,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:01,642 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 508 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1484 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 02:15:01,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1484 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-11-29 02:15:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 564. [2023-11-29 02:15:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 377 states have (on average 1.5596816976127321) internal successors, (588), 378 states have internal predecessors, (588), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 183 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-29 02:15:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 956 transitions. [2023-11-29 02:15:01,719 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 956 transitions. Word has length 626 [2023-11-29 02:15:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:01,720 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 956 transitions. [2023-11-29 02:15:01,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 956 transitions. [2023-11-29 02:15:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:01,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:01,725 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:01,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:01,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:01,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:01,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1336868374, now seen corresponding path program 1 times [2023-11-29 02:15:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843843978] [2023-11-29 02:15:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:02,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:02,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284551399] [2023-11-29 02:15:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:02,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:02,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:02,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:02,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:15:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:02,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:02,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:02,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:02,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843843978] [2023-11-29 02:15:02,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284551399] [2023-11-29 02:15:02,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284551399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:02,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:02,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:15:02,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253242107] [2023-11-29 02:15:02,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:15:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:15:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:15:02,532 INFO L87 Difference]: Start difference. First operand 564 states and 956 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:04,466 INFO L93 Difference]: Finished difference Result 3323 states and 5505 transitions. [2023-11-29 02:15:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:15:04,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:15:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:04,485 INFO L225 Difference]: With dead ends: 3323 [2023-11-29 02:15:04,485 INFO L226 Difference]: Without dead ends: 2760 [2023-11-29 02:15:04,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:15:04,488 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1435 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:04,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2273 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:15:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2023-11-29 02:15:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1040. [2023-11-29 02:15:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 681 states have (on average 1.497797356828194) internal successors, (1020), 684 states have internal predecessors, (1020), 354 states have call successors, (354), 4 states have call predecessors, (354), 4 states have return successors, (354), 351 states have call predecessors, (354), 354 states have call successors, (354) [2023-11-29 02:15:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1728 transitions. [2023-11-29 02:15:04,681 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1728 transitions. Word has length 626 [2023-11-29 02:15:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:04,682 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1728 transitions. [2023-11-29 02:15:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1728 transitions. [2023-11-29 02:15:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:04,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:04,687 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:04,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:15:04,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:15:04,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:04,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 335012138, now seen corresponding path program 1 times [2023-11-29 02:15:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822772305] [2023-11-29 02:15:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:04,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627634256] [2023-11-29 02:15:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:04,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:04,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:04,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:04,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:15:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:05,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:05,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 3402 proven. 27 refuted. 0 times theorem prover too weak. 15195 trivial. 0 not checked. [2023-11-29 02:15:05,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 261 proven. 27 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822772305] [2023-11-29 02:15:05,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627634256] [2023-11-29 02:15:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627634256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:05,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:15:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891457130] [2023-11-29 02:15:05,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:15:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:15:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:15:05,959 INFO L87 Difference]: Start difference. First operand 1040 states and 1728 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-11-29 02:15:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:07,180 INFO L93 Difference]: Finished difference Result 1843 states and 3080 transitions. [2023-11-29 02:15:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:15:07,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 626 [2023-11-29 02:15:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:07,192 INFO L225 Difference]: With dead ends: 1843 [2023-11-29 02:15:07,192 INFO L226 Difference]: Without dead ends: 804 [2023-11-29 02:15:07,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1244 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:15:07,198 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 341 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:07,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1495 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:15:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-11-29 02:15:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 797. [2023-11-29 02:15:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 522 states have (on average 1.5057471264367817) internal successors, (786), 524 states have internal predecessors, (786), 269 states have call successors, (269), 5 states have call predecessors, (269), 5 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 02:15:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1324 transitions. [2023-11-29 02:15:07,333 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1324 transitions. Word has length 626 [2023-11-29 02:15:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:07,335 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1324 transitions. [2023-11-29 02:15:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-11-29 02:15:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1324 transitions. [2023-11-29 02:15:07,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:07,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:07,343 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:07,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:15:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:15:07,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2143500964, now seen corresponding path program 1 times [2023-11-29 02:15:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:07,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113461430] [2023-11-29 02:15:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:07,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:07,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112280393] [2023-11-29 02:15:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:07,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:07,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:07,619 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:07,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:15:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:08,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:15:08,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 11354 proven. 102 refuted. 0 times theorem prover too weak. 7168 trivial. 0 not checked. [2023-11-29 02:15:09,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 186 proven. 102 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:09,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:09,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113461430] [2023-11-29 02:15:09,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:09,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112280393] [2023-11-29 02:15:09,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112280393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:09,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:09,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:15:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064640711] [2023-11-29 02:15:09,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:09,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:15:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:15:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:09,759 INFO L87 Difference]: Start difference. First operand 797 states and 1324 transitions. Second operand has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 5 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 5 states have call predecessors, (180), 5 states have call successors, (180) [2023-11-29 02:15:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:10,581 INFO L93 Difference]: Finished difference Result 1462 states and 2424 transitions. [2023-11-29 02:15:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:15:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 5 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 5 states have call predecessors, (180), 5 states have call successors, (180) Word has length 626 [2023-11-29 02:15:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:10,589 INFO L225 Difference]: With dead ends: 1462 [2023-11-29 02:15:10,589 INFO L226 Difference]: Without dead ends: 811 [2023-11-29 02:15:10,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:15:10,592 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1549 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:10,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 897 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:15:10,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-29 02:15:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 805. [2023-11-29 02:15:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 527 states have (on average 1.4876660341555976) internal successors, (784), 529 states have internal predecessors, (784), 269 states have call successors, (269), 8 states have call predecessors, (269), 8 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 02:15:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1322 transitions. [2023-11-29 02:15:10,715 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1322 transitions. Word has length 626 [2023-11-29 02:15:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:10,717 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1322 transitions. [2023-11-29 02:15:10,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 5 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 5 states have call predecessors, (180), 5 states have call successors, (180) [2023-11-29 02:15:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1322 transitions. [2023-11-29 02:15:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:10,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:10,724 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:10,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:15:10,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:10,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:10,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash 728627620, now seen corresponding path program 1 times [2023-11-29 02:15:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94668863] [2023-11-29 02:15:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:10,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:10,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:10,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98757976] [2023-11-29 02:15:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:10,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:10,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:11,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:15:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:11,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:11,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8706 proven. 183 refuted. 0 times theorem prover too weak. 9735 trivial. 0 not checked. [2023-11-29 02:15:11,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 105 proven. 183 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94668863] [2023-11-29 02:15:12,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98757976] [2023-11-29 02:15:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98757976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:12,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:15:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442464590] [2023-11-29 02:15:12,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:12,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:15:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:15:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:15:12,291 INFO L87 Difference]: Start difference. First operand 805 states and 1322 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-11-29 02:15:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:12,872 INFO L93 Difference]: Finished difference Result 1484 states and 2431 transitions. [2023-11-29 02:15:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:15:12,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) Word has length 626 [2023-11-29 02:15:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:12,881 INFO L225 Difference]: With dead ends: 1484 [2023-11-29 02:15:12,881 INFO L226 Difference]: Without dead ends: 829 [2023-11-29 02:15:12,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1244 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:15:12,884 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 544 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:12,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 993 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:15:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-29 02:15:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 817. [2023-11-29 02:15:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 536 states have (on average 1.4664179104477613) internal successors, (786), 538 states have internal predecessors, (786), 269 states have call successors, (269), 11 states have call predecessors, (269), 11 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 02:15:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1324 transitions. [2023-11-29 02:15:13,015 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1324 transitions. Word has length 626 [2023-11-29 02:15:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:13,016 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1324 transitions. [2023-11-29 02:15:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-11-29 02:15:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1324 transitions. [2023-11-29 02:15:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:13,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:13,023 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:13,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:13,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:13,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:13,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1682567778, now seen corresponding path program 1 times [2023-11-29 02:15:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680634387] [2023-11-29 02:15:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:13,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651832651] [2023-11-29 02:15:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:13,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:13,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:13,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:13,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:15:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:13,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:13,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 1036 proven. 6 refuted. 0 times theorem prover too weak. 17582 trivial. 0 not checked. [2023-11-29 02:15:13,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 282 proven. 6 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:14,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:14,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680634387] [2023-11-29 02:15:14,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:14,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651832651] [2023-11-29 02:15:14,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651832651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:14,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:14,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:15:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366137253] [2023-11-29 02:15:14,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:14,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:15:14,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:14,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:15:14,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:15:14,156 INFO L87 Difference]: Start difference. First operand 817 states and 1324 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-11-29 02:15:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:14,755 INFO L93 Difference]: Finished difference Result 1498 states and 2428 transitions. [2023-11-29 02:15:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:15:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 626 [2023-11-29 02:15:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:14,761 INFO L225 Difference]: With dead ends: 1498 [2023-11-29 02:15:14,761 INFO L226 Difference]: Without dead ends: 835 [2023-11-29 02:15:14,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1244 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:15:14,764 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 829 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:14,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 991 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:15:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-29 02:15:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 821. [2023-11-29 02:15:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 539 states have (on average 1.4471243042671613) internal successors, (780), 541 states have internal predecessors, (780), 269 states have call successors, (269), 12 states have call predecessors, (269), 12 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 02:15:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1318 transitions. [2023-11-29 02:15:14,895 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1318 transitions. Word has length 626 [2023-11-29 02:15:14,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:14,896 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1318 transitions. [2023-11-29 02:15:14,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-11-29 02:15:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1318 transitions. [2023-11-29 02:15:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:14,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:14,903 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:14,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:15,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:15,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -415253214, now seen corresponding path program 1 times [2023-11-29 02:15:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414514989] [2023-11-29 02:15:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:15,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:15,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004984442] [2023-11-29 02:15:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:15,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:15,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:15,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:15,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:15:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:15,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:15,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 2928 proven. 264 refuted. 0 times theorem prover too weak. 15432 trivial. 0 not checked. [2023-11-29 02:15:16,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 24 proven. 264 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:16,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:16,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414514989] [2023-11-29 02:15:16,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:16,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004984442] [2023-11-29 02:15:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004984442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:16,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:16,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:15:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160488977] [2023-11-29 02:15:16,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:16,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:15:16,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:15:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:15:16,780 INFO L87 Difference]: Start difference. First operand 821 states and 1318 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) [2023-11-29 02:15:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:17,276 INFO L93 Difference]: Finished difference Result 1516 states and 2420 transitions. [2023-11-29 02:15:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:15:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) Word has length 626 [2023-11-29 02:15:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:17,284 INFO L225 Difference]: With dead ends: 1516 [2023-11-29 02:15:17,284 INFO L226 Difference]: Without dead ends: 849 [2023-11-29 02:15:17,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1244 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:15:17,288 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 353 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 973 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:15:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-29 02:15:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 829. [2023-11-29 02:15:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 544 states have (on average 1.4283088235294117) internal successors, (777), 546 states have internal predecessors, (777), 269 states have call successors, (269), 15 states have call predecessors, (269), 15 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 02:15:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1315 transitions. [2023-11-29 02:15:17,429 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1315 transitions. Word has length 626 [2023-11-29 02:15:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:17,429 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1315 transitions. [2023-11-29 02:15:17,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) [2023-11-29 02:15:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1315 transitions. [2023-11-29 02:15:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:17,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:17,435 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:17,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:15:17,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:17,636 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:17,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -808280224, now seen corresponding path program 1 times [2023-11-29 02:15:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:17,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612180482] [2023-11-29 02:15:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:17,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:17,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:17,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559860383] [2023-11-29 02:15:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:17,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:17,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:17,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:17,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:15:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:18,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:15:18,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:18,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:18,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:18,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612180482] [2023-11-29 02:15:18,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:18,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559860383] [2023-11-29 02:15:18,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559860383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:18,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:18,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:15:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664546647] [2023-11-29 02:15:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:15:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:15:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:15:18,592 INFO L87 Difference]: Start difference. First operand 829 states and 1315 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:19,034 INFO L93 Difference]: Finished difference Result 2084 states and 3306 transitions. [2023-11-29 02:15:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:15:19,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:15:19,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:19,045 INFO L225 Difference]: With dead ends: 2084 [2023-11-29 02:15:19,045 INFO L226 Difference]: Without dead ends: 1413 [2023-11-29 02:15:19,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:15:19,048 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 674 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:19,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1448 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:15:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2023-11-29 02:15:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1393. [2023-11-29 02:15:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 903 states have (on average 1.4075304540420819) internal successors, (1271), 906 states have internal predecessors, (1271), 461 states have call successors, (461), 28 states have call predecessors, (461), 28 states have return successors, (461), 458 states have call predecessors, (461), 461 states have call successors, (461) [2023-11-29 02:15:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2193 transitions. [2023-11-29 02:15:19,240 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2193 transitions. Word has length 626 [2023-11-29 02:15:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:19,241 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 2193 transitions. [2023-11-29 02:15:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2193 transitions. [2023-11-29 02:15:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-11-29 02:15:19,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:19,247 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:19,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:15:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:19,447 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:19,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1883741476, now seen corresponding path program 1 times [2023-11-29 02:15:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413913291] [2023-11-29 02:15:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:19,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:19,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379156335] [2023-11-29 02:15:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:19,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:19,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:19,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:15:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:19,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:19,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:21,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:21,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:21,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413913291] [2023-11-29 02:15:21,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:21,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379156335] [2023-11-29 02:15:21,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379156335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:21,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:21,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854819156] [2023-11-29 02:15:21,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:21,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:15:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:15:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:15:21,444 INFO L87 Difference]: Start difference. First operand 1393 states and 2193 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:21,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:21,928 INFO L93 Difference]: Finished difference Result 3808 states and 6026 transitions. [2023-11-29 02:15:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:15:21,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 626 [2023-11-29 02:15:21,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:21,947 INFO L225 Difference]: With dead ends: 3808 [2023-11-29 02:15:21,947 INFO L226 Difference]: Without dead ends: 2600 [2023-11-29 02:15:21,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:15:21,951 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 888 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:21,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1419 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:15:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2023-11-29 02:15:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2596. [2023-11-29 02:15:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 1722 states have (on average 1.4227642276422765) internal successors, (2450), 1727 states have internal predecessors, (2450), 825 states have call successors, (825), 48 states have call predecessors, (825), 48 states have return successors, (825), 820 states have call predecessors, (825), 825 states have call successors, (825) [2023-11-29 02:15:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 4100 transitions. [2023-11-29 02:15:22,254 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 4100 transitions. Word has length 626 [2023-11-29 02:15:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:22,255 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 4100 transitions. [2023-11-29 02:15:22,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 4100 transitions. [2023-11-29 02:15:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2023-11-29 02:15:22,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:22,260 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:22,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:15:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:15:22,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:22,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1255203595, now seen corresponding path program 1 times [2023-11-29 02:15:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011859463] [2023-11-29 02:15:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:22,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:22,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132811875] [2023-11-29 02:15:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:22,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:22,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:22,535 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:22,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:15:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:22,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:15:22,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:23,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:23,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011859463] [2023-11-29 02:15:23,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132811875] [2023-11-29 02:15:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132811875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:23,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:23,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:15:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589244317] [2023-11-29 02:15:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:23,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:15:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:15:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:15:23,647 INFO L87 Difference]: Start difference. First operand 2596 states and 4100 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:24,737 INFO L93 Difference]: Finished difference Result 5993 states and 9394 transitions. [2023-11-29 02:15:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:15:24,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 627 [2023-11-29 02:15:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:24,771 INFO L225 Difference]: With dead ends: 5993 [2023-11-29 02:15:24,771 INFO L226 Difference]: Without dead ends: 4785 [2023-11-29 02:15:24,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:15:24,776 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1738 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:24,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 2630 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:15:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2023-11-29 02:15:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4047. [2023-11-29 02:15:25,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 2916 states have (on average 1.4670781893004115) internal successors, (4278), 2929 states have internal predecessors, (4278), 1065 states have call successors, (1065), 65 states have call predecessors, (1065), 65 states have return successors, (1065), 1052 states have call predecessors, (1065), 1065 states have call successors, (1065) [2023-11-29 02:15:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 6408 transitions. [2023-11-29 02:15:25,313 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 6408 transitions. Word has length 627 [2023-11-29 02:15:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:25,314 INFO L495 AbstractCegarLoop]: Abstraction has 4047 states and 6408 transitions. [2023-11-29 02:15:25,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 6408 transitions. [2023-11-29 02:15:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2023-11-29 02:15:25,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:25,324 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:25,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:25,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:25,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:25,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1474058313, now seen corresponding path program 1 times [2023-11-29 02:15:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176670384] [2023-11-29 02:15:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:25,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941308628] [2023-11-29 02:15:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:25,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:25,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:25,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:25,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:15:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:26,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:15:26,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8076 proven. 198 refuted. 0 times theorem prover too weak. 10350 trivial. 0 not checked. [2023-11-29 02:15:26,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 90 proven. 198 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:26,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:26,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176670384] [2023-11-29 02:15:26,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:26,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941308628] [2023-11-29 02:15:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941308628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:26,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:26,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:15:26,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471017721] [2023-11-29 02:15:26,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:26,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:15:26,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:15:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:15:26,951 INFO L87 Difference]: Start difference. First operand 4047 states and 6408 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) [2023-11-29 02:15:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:27,646 INFO L93 Difference]: Finished difference Result 7671 states and 12137 transitions. [2023-11-29 02:15:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:15:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) Word has length 627 [2023-11-29 02:15:27,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:27,665 INFO L225 Difference]: With dead ends: 7671 [2023-11-29 02:15:27,665 INFO L226 Difference]: Without dead ends: 3473 [2023-11-29 02:15:27,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1246 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:15:27,674 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 228 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:27,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 964 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:15:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2023-11-29 02:15:28,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3389. [2023-11-29 02:15:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 2377 states have (on average 1.4328986116954143) internal successors, (3406), 2386 states have internal predecessors, (3406), 945 states have call successors, (945), 66 states have call predecessors, (945), 66 states have return successors, (945), 936 states have call predecessors, (945), 945 states have call successors, (945) [2023-11-29 02:15:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5296 transitions. [2023-11-29 02:15:28,027 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5296 transitions. Word has length 627 [2023-11-29 02:15:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:28,028 INFO L495 AbstractCegarLoop]: Abstraction has 3389 states and 5296 transitions. [2023-11-29 02:15:28,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) [2023-11-29 02:15:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5296 transitions. [2023-11-29 02:15:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:15:28,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:28,033 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:28,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:28,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:28,234 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:28,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 725334295, now seen corresponding path program 1 times [2023-11-29 02:15:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:28,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224869783] [2023-11-29 02:15:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:28,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:28,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835305229] [2023-11-29 02:15:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:28,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:28,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:28,302 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:15:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:28,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:15:28,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 4006 proven. 33 refuted. 0 times theorem prover too weak. 14585 trivial. 0 not checked. [2023-11-29 02:15:28,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 255 proven. 33 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:29,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224869783] [2023-11-29 02:15:29,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835305229] [2023-11-29 02:15:29,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835305229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:29,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:29,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 02:15:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648885500] [2023-11-29 02:15:29,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:15:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:15:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:15:29,277 INFO L87 Difference]: Start difference. First operand 3389 states and 5296 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 02:15:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:31,019 INFO L93 Difference]: Finished difference Result 7719 states and 12116 transitions. [2023-11-29 02:15:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:15:31,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 628 [2023-11-29 02:15:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:31,039 INFO L225 Difference]: With dead ends: 7719 [2023-11-29 02:15:31,039 INFO L226 Difference]: Without dead ends: 4523 [2023-11-29 02:15:31,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1247 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:15:31,047 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1440 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:31,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 1695 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:15:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2023-11-29 02:15:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4413. [2023-11-29 02:15:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 3122 states have (on average 1.4615631005765535) internal successors, (4563), 3133 states have internal predecessors, (4563), 1199 states have call successors, (1199), 91 states have call predecessors, (1199), 91 states have return successors, (1199), 1188 states have call predecessors, (1199), 1199 states have call successors, (1199) [2023-11-29 02:15:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6961 transitions. [2023-11-29 02:15:31,539 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6961 transitions. Word has length 628 [2023-11-29 02:15:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:31,540 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6961 transitions. [2023-11-29 02:15:31,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 02:15:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6961 transitions. [2023-11-29 02:15:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:15:31,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:31,547 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:31,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:31,747 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:31,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash -969178471, now seen corresponding path program 1 times [2023-11-29 02:15:31,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:31,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32360750] [2023-11-29 02:15:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:31,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:31,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105690349] [2023-11-29 02:15:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:31,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:31,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:31,843 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:31,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:15:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:32,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:15:32,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 3556 proven. 258 refuted. 0 times theorem prover too weak. 14810 trivial. 0 not checked. [2023-11-29 02:15:32,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:33,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32360750] [2023-11-29 02:15:33,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105690349] [2023-11-29 02:15:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105690349] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:15:33,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-29 02:15:33,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652392369] [2023-11-29 02:15:33,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:33,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:15:33,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:15:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:15:33,163 INFO L87 Difference]: Start difference. First operand 4413 states and 6961 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:34,787 INFO L93 Difference]: Finished difference Result 13670 states and 21638 transitions. [2023-11-29 02:15:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:15:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 628 [2023-11-29 02:15:34,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:34,813 INFO L225 Difference]: With dead ends: 13670 [2023-11-29 02:15:34,813 INFO L226 Difference]: Without dead ends: 9454 [2023-11-29 02:15:34,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1248 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:15:34,824 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 1085 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:34,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 2851 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:15:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2023-11-29 02:15:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 4497. [2023-11-29 02:15:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 3189 states have (on average 1.4518657886484791) internal successors, (4630), 3200 states have internal predecessors, (4630), 1199 states have call successors, (1199), 108 states have call predecessors, (1199), 108 states have return successors, (1199), 1188 states have call predecessors, (1199), 1199 states have call successors, (1199) [2023-11-29 02:15:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 7028 transitions. [2023-11-29 02:15:35,596 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 7028 transitions. Word has length 628 [2023-11-29 02:15:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:35,596 INFO L495 AbstractCegarLoop]: Abstraction has 4497 states and 7028 transitions. [2023-11-29 02:15:35,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 7028 transitions. [2023-11-29 02:15:35,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:15:35,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:35,601 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:35,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:35,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:15:35,802 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:35,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -969118889, now seen corresponding path program 1 times [2023-11-29 02:15:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271408863] [2023-11-29 02:15:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:35,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321008511] [2023-11-29 02:15:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:35,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:35,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:35,864 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:35,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:15:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:36,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:15:36,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:15:37,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:15:37,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271408863] [2023-11-29 02:15:37,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321008511] [2023-11-29 02:15:37,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321008511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:37,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:37,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:15:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755965742] [2023-11-29 02:15:37,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:37,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:15:37,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:15:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:15:37,050 INFO L87 Difference]: Start difference. First operand 4497 states and 7028 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:39,469 INFO L93 Difference]: Finished difference Result 18598 states and 28987 transitions. [2023-11-29 02:15:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:15:39,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 628 [2023-11-29 02:15:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:39,495 INFO L225 Difference]: With dead ends: 18598 [2023-11-29 02:15:39,496 INFO L226 Difference]: Without dead ends: 14302 [2023-11-29 02:15:39,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:39,507 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1794 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:39,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 1735 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:15:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14302 states. [2023-11-29 02:15:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14302 to 14270. [2023-11-29 02:15:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14270 states, 10649 states have (on average 1.467367827965067) internal successors, (15626), 10702 states have internal predecessors, (15626), 3283 states have call successors, (3283), 337 states have call predecessors, (3283), 337 states have return successors, (3283), 3230 states have call predecessors, (3283), 3283 states have call successors, (3283) [2023-11-29 02:15:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14270 states to 14270 states and 22192 transitions. [2023-11-29 02:15:41,943 INFO L78 Accepts]: Start accepts. Automaton has 14270 states and 22192 transitions. Word has length 628 [2023-11-29 02:15:41,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:41,944 INFO L495 AbstractCegarLoop]: Abstraction has 14270 states and 22192 transitions. [2023-11-29 02:15:41,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:15:41,944 INFO L276 IsEmpty]: Start isEmpty. Operand 14270 states and 22192 transitions. [2023-11-29 02:15:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:15:41,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:41,952 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:41,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:15:42,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:15:42,153 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:42,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:42,153 INFO L85 PathProgramCache]: Analyzing trace with hash -720972395, now seen corresponding path program 1 times [2023-11-29 02:15:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067591238] [2023-11-29 02:15:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:42,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850120081] [2023-11-29 02:15:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:42,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:42,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:15:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:42,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 02:15:42,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 11769 proven. 354 refuted. 0 times theorem prover too weak. 6501 trivial. 0 not checked. [2023-11-29 02:15:44,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 150 proven. 138 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:15:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067591238] [2023-11-29 02:15:45,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850120081] [2023-11-29 02:15:45,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850120081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:45,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:15:45,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2023-11-29 02:15:45,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955351523] [2023-11-29 02:15:45,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:45,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 02:15:45,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:45,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 02:15:45,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-29 02:15:45,269 INFO L87 Difference]: Start difference. First operand 14270 states and 22192 transitions. Second operand has 26 states, 26 states have (on average 10.653846153846153) internal successors, (277), 26 states have internal predecessors, (277), 4 states have call successors, (170), 3 states have call predecessors, (170), 6 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171) [2023-11-29 02:16:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:17,503 INFO L93 Difference]: Finished difference Result 184954 states and 279472 transitions. [2023-11-29 02:16:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2023-11-29 02:16:17,504 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.653846153846153) internal successors, (277), 26 states have internal predecessors, (277), 4 states have call successors, (170), 3 states have call predecessors, (170), 6 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171) Word has length 628 [2023-11-29 02:16:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:18,061 INFO L225 Difference]: With dead ends: 184954 [2023-11-29 02:16:18,061 INFO L226 Difference]: Without dead ends: 170889 [2023-11-29 02:16:18,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1447 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14933 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6722, Invalid=31108, Unknown=0, NotChecked=0, Total=37830 [2023-11-29 02:16:18,123 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 5960 mSDsluCounter, 10964 mSDsCounter, 0 mSdLazyCounter, 9007 mSolverCounterSat, 1982 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6026 SdHoareTripleChecker+Valid, 11750 SdHoareTripleChecker+Invalid, 10989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1982 IncrementalHoareTripleChecker+Valid, 9007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:18,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6026 Valid, 11750 Invalid, 10989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1982 Valid, 9007 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-29 02:16:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170889 states. [2023-11-29 02:16:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170889 to 24377. [2023-11-29 02:16:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24377 states, 19640 states have (on average 1.5088085539714868) internal successors, (29633), 19725 states have internal predecessors, (29633), 4083 states have call successors, (4083), 653 states have call predecessors, (4083), 653 states have return successors, (4083), 3998 states have call predecessors, (4083), 4083 states have call successors, (4083) [2023-11-29 02:16:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24377 states to 24377 states and 37799 transitions. [2023-11-29 02:16:24,980 INFO L78 Accepts]: Start accepts. Automaton has 24377 states and 37799 transitions. Word has length 628 [2023-11-29 02:16:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:24,981 INFO L495 AbstractCegarLoop]: Abstraction has 24377 states and 37799 transitions. [2023-11-29 02:16:24,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.653846153846153) internal successors, (277), 26 states have internal predecessors, (277), 4 states have call successors, (170), 3 states have call predecessors, (170), 6 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171) [2023-11-29 02:16:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 24377 states and 37799 transitions. [2023-11-29 02:16:24,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:16:24,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:24,993 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:25,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:16:25,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:25,193 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:25,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -728879143, now seen corresponding path program 1 times [2023-11-29 02:16:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045864442] [2023-11-29 02:16:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:25,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:16:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006079464] [2023-11-29 02:16:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,253 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:16:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:16:25,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8478 proven. 189 refuted. 0 times theorem prover too weak. 9957 trivial. 0 not checked. [2023-11-29 02:16:27,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 99 proven. 189 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-11-29 02:16:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045864442] [2023-11-29 02:16:27,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:16:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006079464] [2023-11-29 02:16:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006079464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:27,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:16:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 02:16:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889447806] [2023-11-29 02:16:27,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:27,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:16:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:16:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:16:27,719 INFO L87 Difference]: Start difference. First operand 24377 states and 37799 transitions. Second operand has 14 states, 14 states have (on average 16.857142857142858) internal successors, (236), 14 states have internal predecessors, (236), 4 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 4 states have call predecessors, (194), 4 states have call successors, (194) [2023-11-29 02:16:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:42,206 INFO L93 Difference]: Finished difference Result 100785 states and 156165 transitions. [2023-11-29 02:16:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 02:16:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.857142857142858) internal successors, (236), 14 states have internal predecessors, (236), 4 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 4 states have call predecessors, (194), 4 states have call successors, (194) Word has length 628 [2023-11-29 02:16:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:42,331 INFO L225 Difference]: With dead ends: 100785 [2023-11-29 02:16:42,331 INFO L226 Difference]: Without dead ends: 76599 [2023-11-29 02:16:42,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1245 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 02:16:42,368 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 3706 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:42,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3742 Valid, 4059 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1108 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 02:16:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76599 states. [2023-11-29 02:16:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76599 to 72336. [2023-11-29 02:16:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72336 states, 60484 states have (on average 1.5321076648369816) internal successors, (92668), 60755 states have internal predecessors, (92668), 10084 states have call successors, (10084), 1767 states have call predecessors, (10084), 1767 states have return successors, (10084), 9813 states have call predecessors, (10084), 10084 states have call successors, (10084) [2023-11-29 02:16:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72336 states to 72336 states and 112836 transitions. [2023-11-29 02:16:52,359 INFO L78 Accepts]: Start accepts. Automaton has 72336 states and 112836 transitions. Word has length 628 [2023-11-29 02:16:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:52,360 INFO L495 AbstractCegarLoop]: Abstraction has 72336 states and 112836 transitions. [2023-11-29 02:16:52,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.857142857142858) internal successors, (236), 14 states have internal predecessors, (236), 4 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 4 states have call predecessors, (194), 4 states have call successors, (194) [2023-11-29 02:16:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 72336 states and 112836 transitions. [2023-11-29 02:16:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:16:52,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:52,383 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:52,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:16:52,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:52,584 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:52,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1005225307, now seen corresponding path program 1 times [2023-11-29 02:16:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:52,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54923186] [2023-11-29 02:16:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:52,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:16:52,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158388371] [2023-11-29 02:16:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:52,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:52,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:52,634 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:52,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:16:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:16:53,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:16:53,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:16:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54923186] [2023-11-29 02:16:53,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:16:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158388371] [2023-11-29 02:16:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158388371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:53,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:53,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:16:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981436905] [2023-11-29 02:16:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:53,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:16:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:16:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:16:53,796 INFO L87 Difference]: Start difference. First operand 72336 states and 112836 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:17:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:17,268 INFO L93 Difference]: Finished difference Result 228817 states and 355572 transitions. [2023-11-29 02:17:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:17:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 628 [2023-11-29 02:17:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:17,521 INFO L225 Difference]: With dead ends: 228817 [2023-11-29 02:17:17,521 INFO L226 Difference]: Without dead ends: 156706 [2023-11-29 02:17:17,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:17:17,587 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 839 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:17,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1964 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:17:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156706 states. [2023-11-29 02:17:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156706 to 127976. [2023-11-29 02:17:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127976 states, 109489 states have (on average 1.5632163961676515) internal successors, (171155), 109952 states have internal predecessors, (171155), 15648 states have call successors, (15648), 2838 states have call predecessors, (15648), 2838 states have return successors, (15648), 15185 states have call predecessors, (15648), 15648 states have call successors, (15648) [2023-11-29 02:17:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127976 states to 127976 states and 202451 transitions. [2023-11-29 02:17:35,231 INFO L78 Accepts]: Start accepts. Automaton has 127976 states and 202451 transitions. Word has length 628 [2023-11-29 02:17:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:35,232 INFO L495 AbstractCegarLoop]: Abstraction has 127976 states and 202451 transitions. [2023-11-29 02:17:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:17:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 127976 states and 202451 transitions. [2023-11-29 02:17:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:17:35,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:35,264 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:35,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:17:35,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 02:17:35,465 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:35,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1045758691, now seen corresponding path program 1 times [2023-11-29 02:17:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814520842] [2023-11-29 02:17:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:35,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:17:35,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772715117] [2023-11-29 02:17:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:35,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:35,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:35,524 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:35,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:17:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:35,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:17:35,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:17:36,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814520842] [2023-11-29 02:17:36,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:17:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772715117] [2023-11-29 02:17:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772715117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:36,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:36,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:17:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113428312] [2023-11-29 02:17:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:17:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:17:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:17:36,440 INFO L87 Difference]: Start difference. First operand 127976 states and 202451 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:18:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:07,779 INFO L93 Difference]: Finished difference Result 374110 states and 589483 transitions. [2023-11-29 02:18:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 628 [2023-11-29 02:18:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:08,185 INFO L225 Difference]: With dead ends: 374110 [2023-11-29 02:18:08,186 INFO L226 Difference]: Without dead ends: 246363 [2023-11-29 02:18:08,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:08,510 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 184 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 975 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:18:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246363 states. [2023-11-29 02:18:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246363 to 243831. [2023-11-29 02:18:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243831 states, 206974 states have (on average 1.544677109202122) internal successors, (319708), 207899 states have internal predecessors, (319708), 31199 states have call successors, (31199), 5657 states have call predecessors, (31199), 5657 states have return successors, (31199), 30274 states have call predecessors, (31199), 31199 states have call successors, (31199) [2023-11-29 02:18:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243831 states to 243831 states and 382106 transitions. [2023-11-29 02:18:41,261 INFO L78 Accepts]: Start accepts. Automaton has 243831 states and 382106 transitions. Word has length 628 [2023-11-29 02:18:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:41,261 INFO L495 AbstractCegarLoop]: Abstraction has 243831 states and 382106 transitions. [2023-11-29 02:18:41,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:18:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 243831 states and 382106 transitions. [2023-11-29 02:18:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:18:41,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:41,322 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:41,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 02:18:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 02:18:41,523 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:41,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1253371801, now seen corresponding path program 1 times [2023-11-29 02:18:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318446174] [2023-11-29 02:18:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:41,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:18:41,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951109969] [2023-11-29 02:18:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:41,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:41,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:41,586 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:41,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:18:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:42,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 02:18:42,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9444 proven. 270 refuted. 0 times theorem prover too weak. 8910 trivial. 0 not checked. [2023-11-29 02:18:48,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:20:40,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318446174] [2023-11-29 02:20:40,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951109969] [2023-11-29 02:20:40,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951109969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:20:40,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:20:40,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 02:20:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121570010] [2023-11-29 02:20:40,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:20:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:20:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:20:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=386, Unknown=7, NotChecked=0, Total=462 [2023-11-29 02:20:40,544 INFO L87 Difference]: Start difference. First operand 243831 states and 382106 transitions. Second operand has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (97), 3 states have call predecessors, (97), 4 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) [2023-11-29 02:23:04,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:24:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:24:32,139 INFO L93 Difference]: Finished difference Result 1430267 states and 2209957 transitions. [2023-11-29 02:24:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 02:24:32,140 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (97), 3 states have call predecessors, (97), 4 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) Word has length 628 [2023-11-29 02:24:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:24:34,967 INFO L225 Difference]: With dead ends: 1430267 [2023-11-29 02:24:34,967 INFO L226 Difference]: Without dead ends: 1186665 [2023-11-29 02:24:35,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 67.6s TimeCoverageRelationStatistics Valid=938, Invalid=3215, Unknown=7, NotChecked=0, Total=4160 [2023-11-29 02:24:35,521 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 2599 mSDsluCounter, 5011 mSDsCounter, 0 mSdLazyCounter, 4895 mSolverCounterSat, 1038 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 5934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 4895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:24:35,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 5748 Invalid, 5934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1038 Valid, 4895 Invalid, 1 Unknown, 0 Unchecked, 43.1s Time] [2023-11-29 02:24:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186665 states. [2023-11-29 02:25:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186665 to 257732. [2023-11-29 02:25:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257732 states, 220814 states have (on average 1.561658228192053) internal successors, (344836), 221739 states have internal predecessors, (344836), 31199 states have call successors, (31199), 5718 states have call predecessors, (31199), 5718 states have return successors, (31199), 30274 states have call predecessors, (31199), 31199 states have call successors, (31199) [2023-11-29 02:25:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257732 states to 257732 states and 407234 transitions. [2023-11-29 02:25:32,958 INFO L78 Accepts]: Start accepts. Automaton has 257732 states and 407234 transitions. Word has length 628 [2023-11-29 02:25:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:32,959 INFO L495 AbstractCegarLoop]: Abstraction has 257732 states and 407234 transitions. [2023-11-29 02:25:32,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (97), 3 states have call predecessors, (97), 4 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) [2023-11-29 02:25:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 257732 states and 407234 transitions. [2023-11-29 02:25:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-29 02:25:33,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:33,018 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:25:33,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 02:25:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 02:25:33,219 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:33,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1369714983, now seen corresponding path program 1 times [2023-11-29 02:25:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056229889] [2023-11-29 02:25:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:33,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:25:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785641654] [2023-11-29 02:25:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:33,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:33,272 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:33,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6780624-94ae-4dd6-aa48-aa9fad0ad06e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 02:25:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:33,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:25:33,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-11-29 02:25:33,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:33,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056229889] [2023-11-29 02:25:33,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:25:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785641654] [2023-11-29 02:25:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785641654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:33,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:33,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:25:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505637006] [2023-11-29 02:25:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:33,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:25:33,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:25:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:25:33,826 INFO L87 Difference]: Start difference. First operand 257732 states and 407234 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-11-29 02:27:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:27:24,844 INFO L93 Difference]: Finished difference Result 789278 states and 1244312 transitions. [2023-11-29 02:27:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:27:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 628 [2023-11-29 02:27:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:27:25,997 INFO L225 Difference]: With dead ends: 789278 [2023-11-29 02:27:25,997 INFO L226 Difference]: Without dead ends: 531779 [2023-11-29 02:27:26,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:27:26,237 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1327 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 977 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 977 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:27:26,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 3601 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [977 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:27:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531779 states.