./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.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_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/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_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/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_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/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 a356de088718b875f6f2396a50433e83aa6fe2b03aff9fb8f00ce9106af95d3b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:42:36,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:42:36,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:42:36,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:42:36,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:42:36,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:42:36,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:42:36,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:42:36,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:42:36,415 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:42:36,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:42:36,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:42:36,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:42:36,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:42:36,417 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:42:36,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:42:36,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:42:36,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:42:36,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:42:36,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:42:36,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:42:36,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:42:36,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:42:36,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:42:36,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:42:36,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:42:36,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:42:36,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:42:36,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:42:36,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:42:36,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:42:36,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:42:36,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:42:36,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:42:36,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:42:36,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:42:36,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:42:36,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:42:36,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:42:36,427 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:42:36,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:42:36,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:42:36,428 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_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a356de088718b875f6f2396a50433e83aa6fe2b03aff9fb8f00ce9106af95d3b [2023-11-29 05:42:36,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:42:36,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:42:36,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:42:36,671 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:42:36,671 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:42:36,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i [2023-11-29 05:42:39,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:42:39,549 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:42:39,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i [2023-11-29 05:42:39,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/data/3d2cc4f88/e400fed634644972b52a30d75ff5a543/FLAG6283eb440 [2023-11-29 05:42:39,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/data/3d2cc4f88/e400fed634644972b52a30d75ff5a543 [2023-11-29 05:42:39,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:42:39,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:42:39,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:42:39,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:42:39,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:42:39,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6090b409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39, skipping insertion in model container [2023-11-29 05:42:39,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,622 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:42:39,758 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_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i[915,928] [2023-11-29 05:42:39,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:42:39,824 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:42:39,837 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_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i[915,928] [2023-11-29 05:42:39,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:42:39,882 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:42:39,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39 WrapperNode [2023-11-29 05:42:39,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:42:39,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:42:39,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:42:39,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:42:39,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,940 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 220 [2023-11-29 05:42:39,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:42:39,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:42:39,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:42:39,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:42:39,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,975 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 05:42:39,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:39,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:40,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:40,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:42:40,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:42:40,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:42:40,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:42:40,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (1/1) ... [2023-11-29 05:42:40,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:42:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:40,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:42:40,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:42:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:42:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:42:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:42:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:42:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:42:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:42:40,176 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:42:40,179 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:42:40,533 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:42:40,562 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:42:40,563 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:42:40,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:42:40 BoogieIcfgContainer [2023-11-29 05:42:40,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:42:40,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:42:40,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:42:40,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:42:40,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:42:39" (1/3) ... [2023-11-29 05:42:40,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420ef5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:42:40, skipping insertion in model container [2023-11-29 05:42:40,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:39" (2/3) ... [2023-11-29 05:42:40,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420ef5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:42:40, skipping insertion in model container [2023-11-29 05:42:40,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:42:40" (3/3) ... [2023-11-29 05:42:40,573 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-34.i [2023-11-29 05:42:40,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:42:40,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:42:40,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:42:40,674 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;@1c9fa696, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:42:40,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:42:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 52 states have internal predecessors, (78), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:42:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 05:42:40,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:40,694 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:40,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:40,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1697288489, now seen corresponding path program 1 times [2023-11-29 05:42:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:40,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691319746] [2023-11-29 05:42:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:40,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:40,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691319746] [2023-11-29 05:42:40,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:42:40,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770159607] [2023-11-29 05:42:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:40,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:40,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:40,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:40,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:42:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:41,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:42:41,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-11-29 05:42:41,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:42:41,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770159607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:41,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:41,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:42:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457768995] [2023-11-29 05:42:41,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:41,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:42:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:41,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:42:41,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:42:41,191 INFO L87 Difference]: Start difference. First operand has 76 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 52 states have internal predecessors, (78), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:42:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:41,230 INFO L93 Difference]: Finished difference Result 149 states and 264 transitions. [2023-11-29 05:42:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:42:41,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 141 [2023-11-29 05:42:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:41,240 INFO L225 Difference]: With dead ends: 149 [2023-11-29 05:42:41,241 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 05:42:41,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 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 05:42:41,247 INFO L413 NwaCegarLoop]: 114 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, 114 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 05:42:41,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 05:42:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-29 05:42:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.46) internal successors, (73), 50 states have internal predecessors, (73), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:42:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 117 transitions. [2023-11-29 05:42:41,292 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 117 transitions. Word has length 141 [2023-11-29 05:42:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:41,292 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 117 transitions. [2023-11-29 05:42:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:42:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 117 transitions. [2023-11-29 05:42:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 05:42:41,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:41,297 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:41,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:42:41,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:41,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:41,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash -977960365, now seen corresponding path program 1 times [2023-11-29 05:42:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918097789] [2023-11-29 05:42:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:41,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:41,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:41,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187601722] [2023-11-29 05:42:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:41,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:41,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:41,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:42:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:41,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:42:41,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:42:41,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:42:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918097789] [2023-11-29 05:42:41,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187601722] [2023-11-29 05:42:41,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187601722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:41,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:41,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:42:41,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545628231] [2023-11-29 05:42:41,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:41,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:42:41,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:42:41,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:42:41,963 INFO L87 Difference]: Start difference. First operand 74 states and 117 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:42:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:42,272 INFO L93 Difference]: Finished difference Result 221 states and 348 transitions. [2023-11-29 05:42:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:42:42,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 141 [2023-11-29 05:42:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:42,277 INFO L225 Difference]: With dead ends: 221 [2023-11-29 05:42:42,278 INFO L226 Difference]: Without dead ends: 148 [2023-11-29 05:42:42,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:42:42,280 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 123 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:42,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 449 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:42:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-29 05:42:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 76. [2023-11-29 05:42:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:42:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 119 transitions. [2023-11-29 05:42:42,302 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 119 transitions. Word has length 141 [2023-11-29 05:42:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:42,304 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 119 transitions. [2023-11-29 05:42:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:42:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 119 transitions. [2023-11-29 05:42:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:42:42,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:42,308 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:42,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 05:42:42,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:42:42,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:42,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash 817924019, now seen corresponding path program 1 times [2023-11-29 05:42:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:42,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732592780] [2023-11-29 05:42:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:42,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:42,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221342703] [2023-11-29 05:42:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:42,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:42,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:42,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:42,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:42:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:42,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:42:42,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 453 proven. 39 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-11-29 05:42:43,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:42:43,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:43,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732592780] [2023-11-29 05:42:43,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:43,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221342703] [2023-11-29 05:42:43,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221342703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:42:43,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:42:43,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 05:42:43,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160113219] [2023-11-29 05:42:43,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:42:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:42:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:42:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:43,524 INFO L87 Difference]: Start difference. First operand 76 states and 119 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:42:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:44,136 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2023-11-29 05:42:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:42:44,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 142 [2023-11-29 05:42:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:44,140 INFO L225 Difference]: With dead ends: 276 [2023-11-29 05:42:44,140 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 05:42:44,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:42:44,142 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 322 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:44,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 379 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:42:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 05:42:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 149. [2023-11-29 05:42:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 101 states have internal predecessors, (143), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 05:42:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 231 transitions. [2023-11-29 05:42:44,183 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 231 transitions. Word has length 142 [2023-11-29 05:42:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:44,184 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 231 transitions. [2023-11-29 05:42:44,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:42:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 231 transitions. [2023-11-29 05:42:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:42:44,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:44,188 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:44,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:42:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 05:42:44,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:44,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash -803671932, now seen corresponding path program 1 times [2023-11-29 05:42:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167420320] [2023-11-29 05:42:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:44,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:44,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669009450] [2023-11-29 05:42:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:44,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:44,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:44,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:44,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:42:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:44,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:42:44,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:42:44,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:42:44,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167420320] [2023-11-29 05:42:44,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669009450] [2023-11-29 05:42:44,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669009450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:44,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:44,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:42:44,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827468101] [2023-11-29 05:42:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:44,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:42:44,736 INFO L87 Difference]: Start difference. First operand 149 states and 231 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:42:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:44,893 INFO L93 Difference]: Finished difference Result 497 states and 770 transitions. [2023-11-29 05:42:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:42:44,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-11-29 05:42:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:44,897 INFO L225 Difference]: With dead ends: 497 [2023-11-29 05:42:44,897 INFO L226 Difference]: Without dead ends: 349 [2023-11-29 05:42:44,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:42:44,899 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 119 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:44,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 367 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:42:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-29 05:42:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 299. [2023-11-29 05:42:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 204 states have (on average 1.4019607843137254) internal successors, (286), 204 states have internal predecessors, (286), 88 states have call successors, (88), 6 states have call predecessors, (88), 6 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-29 05:42:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 462 transitions. [2023-11-29 05:42:44,957 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 462 transitions. Word has length 142 [2023-11-29 05:42:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:44,958 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 462 transitions. [2023-11-29 05:42:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:42:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 462 transitions. [2023-11-29 05:42:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:42:44,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:44,960 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:44,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:42:45,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:45,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:45,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash 975952890, now seen corresponding path program 1 times [2023-11-29 05:42:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:45,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208690859] [2023-11-29 05:42:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:45,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:45,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357700055] [2023-11-29 05:42:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:45,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:45,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:45,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:42:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:45,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 05:42:45,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 177 proven. 57 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2023-11-29 05:42:46,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:42:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208690859] [2023-11-29 05:42:47,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357700055] [2023-11-29 05:42:47,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357700055] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:47,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:47,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2023-11-29 05:42:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913298204] [2023-11-29 05:42:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:47,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:42:47,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:47,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:42:47,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:42:47,999 INFO L87 Difference]: Start difference. First operand 299 states and 462 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:42:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:49,751 INFO L93 Difference]: Finished difference Result 1252 states and 1927 transitions. [2023-11-29 05:42:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:42:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2023-11-29 05:42:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:49,760 INFO L225 Difference]: With dead ends: 1252 [2023-11-29 05:42:49,760 INFO L226 Difference]: Without dead ends: 1102 [2023-11-29 05:42:49,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:42:49,762 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 494 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:49,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1049 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:42:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-11-29 05:42:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 665. [2023-11-29 05:42:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 454 states have (on average 1.4295154185022025) internal successors, (649), 454 states have internal predecessors, (649), 198 states have call successors, (198), 12 states have call predecessors, (198), 12 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2023-11-29 05:42:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1045 transitions. [2023-11-29 05:42:49,902 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1045 transitions. Word has length 143 [2023-11-29 05:42:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:49,902 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 1045 transitions. [2023-11-29 05:42:49,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:42:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1045 transitions. [2023-11-29 05:42:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:42:49,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:49,904 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:49,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:42:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:50,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:50,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash -645643061, now seen corresponding path program 1 times [2023-11-29 05:42:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292629519] [2023-11-29 05:42:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:50,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:50,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407148959] [2023-11-29 05:42:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:50,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:50,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:50,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:50,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:42:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:50,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 05:42:50,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:42:53,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:42:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:53,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292629519] [2023-11-29 05:42:53,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:53,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407148959] [2023-11-29 05:42:53,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407148959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:53,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:53,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:42:53,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865766485] [2023-11-29 05:42:53,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:53,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:42:53,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:42:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:53,020 INFO L87 Difference]: Start difference. First operand 665 states and 1045 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:42:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:54,686 INFO L93 Difference]: Finished difference Result 1821 states and 2870 transitions. [2023-11-29 05:42:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:42:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-11-29 05:42:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:54,698 INFO L225 Difference]: With dead ends: 1821 [2023-11-29 05:42:54,699 INFO L226 Difference]: Without dead ends: 1518 [2023-11-29 05:42:54,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:42:54,701 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 564 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 735 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:42:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-11-29 05:42:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1414. [2023-11-29 05:42:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 972 states have (on average 1.4300411522633745) internal successors, (1390), 972 states have internal predecessors, (1390), 418 states have call successors, (418), 23 states have call predecessors, (418), 23 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2023-11-29 05:42:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2226 transitions. [2023-11-29 05:42:54,981 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2226 transitions. Word has length 143 [2023-11-29 05:42:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:54,982 INFO L495 AbstractCegarLoop]: Abstraction has 1414 states and 2226 transitions. [2023-11-29 05:42:54,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:42:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2226 transitions. [2023-11-29 05:42:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:42:54,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:54,985 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:54,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:42:55,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:55,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:55,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash -588384759, now seen corresponding path program 1 times [2023-11-29 05:42:55,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:55,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442371720] [2023-11-29 05:42:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:55,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:55,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652798468] [2023-11-29 05:42:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:55,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:55,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:55,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:55,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:42:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:55,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:42:55,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:42:57,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:42:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442371720] [2023-11-29 05:42:57,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652798468] [2023-11-29 05:42:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652798468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:42:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556533960] [2023-11-29 05:42:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:57,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:42:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:42:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:57,953 INFO L87 Difference]: Start difference. First operand 1414 states and 2226 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:00,227 INFO L93 Difference]: Finished difference Result 2182 states and 3439 transitions. [2023-11-29 05:43:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:43:00,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-11-29 05:43:00,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:00,238 INFO L225 Difference]: With dead ends: 2182 [2023-11-29 05:43:00,239 INFO L226 Difference]: Without dead ends: 1518 [2023-11-29 05:43:00,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:43:00,242 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 434 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:00,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 762 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:43:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-11-29 05:43:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1428. [2023-11-29 05:43:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 986 states have (on average 1.4300202839756593) internal successors, (1410), 986 states have internal predecessors, (1410), 418 states have call successors, (418), 23 states have call predecessors, (418), 23 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2023-11-29 05:43:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2246 transitions. [2023-11-29 05:43:00,502 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2246 transitions. Word has length 143 [2023-11-29 05:43:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:00,503 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2246 transitions. [2023-11-29 05:43:00,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2246 transitions. [2023-11-29 05:43:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:43:00,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:00,505 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:00,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:43:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:00,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:00,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1454989687, now seen corresponding path program 1 times [2023-11-29 05:43:00,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:00,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979833196] [2023-11-29 05:43:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:00,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:00,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171065020] [2023-11-29 05:43:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:00,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:00,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:00,731 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:00,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:43:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:00,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 05:43:00,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 177 proven. 57 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2023-11-29 05:43:01,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979833196] [2023-11-29 05:43:22,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171065020] [2023-11-29 05:43:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171065020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:22,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:22,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 05:43:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180236240] [2023-11-29 05:43:22,585 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:43:22,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:43:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:43:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2023-11-29 05:43:22,586 INFO L87 Difference]: Start difference. First operand 1428 states and 2246 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:43:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:23,898 INFO L93 Difference]: Finished difference Result 3323 states and 5165 transitions. [2023-11-29 05:43:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:43:23,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2023-11-29 05:43:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:23,911 INFO L225 Difference]: With dead ends: 3323 [2023-11-29 05:43:23,911 INFO L226 Difference]: Without dead ends: 1941 [2023-11-29 05:43:23,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=189, Invalid=740, Unknown=1, NotChecked=0, Total=930 [2023-11-29 05:43:23,916 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 302 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:23,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 480 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:43:23,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2023-11-29 05:43:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1715. [2023-11-29 05:43:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1272 states have (on average 1.4323899371069182) internal successors, (1822), 1272 states have internal predecessors, (1822), 418 states have call successors, (418), 24 states have call predecessors, (418), 24 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2023-11-29 05:43:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2658 transitions. [2023-11-29 05:43:24,186 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2658 transitions. Word has length 143 [2023-11-29 05:43:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:24,187 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2658 transitions. [2023-11-29 05:43:24,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:43:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2658 transitions. [2023-11-29 05:43:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:43:24,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:24,190 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:24,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:43:24,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:24,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:24,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1232449075, now seen corresponding path program 1 times [2023-11-29 05:43:24,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:24,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221715237] [2023-11-29 05:43:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:24,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:24,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:24,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411502577] [2023-11-29 05:43:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:24,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:24,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:24,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:43:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:24,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:43:24,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:43:24,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:43:24,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:24,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221715237] [2023-11-29 05:43:24,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:24,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411502577] [2023-11-29 05:43:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411502577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:24,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:24,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:43:24,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963018282] [2023-11-29 05:43:24,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:24,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:24,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:43:24,660 INFO L87 Difference]: Start difference. First operand 1715 states and 2658 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:24,944 INFO L93 Difference]: Finished difference Result 2911 states and 4524 transitions. [2023-11-29 05:43:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:43:24,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-11-29 05:43:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:24,952 INFO L225 Difference]: With dead ends: 2911 [2023-11-29 05:43:24,952 INFO L226 Difference]: Without dead ends: 1454 [2023-11-29 05:43:24,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:43:24,956 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 68 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:24,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 328 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:43:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2023-11-29 05:43:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1388. [2023-11-29 05:43:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1017 states have (on average 1.432645034414946) internal successors, (1457), 1017 states have internal predecessors, (1457), 352 states have call successors, (352), 18 states have call predecessors, (352), 18 states have return successors, (352), 352 states have call predecessors, (352), 352 states have call successors, (352) [2023-11-29 05:43:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2161 transitions. [2023-11-29 05:43:25,139 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2161 transitions. Word has length 143 [2023-11-29 05:43:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:25,139 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 2161 transitions. [2023-11-29 05:43:25,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2161 transitions. [2023-11-29 05:43:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:43:25,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:25,142 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:25,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:43:25,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:25,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:25,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 634220617, now seen corresponding path program 1 times [2023-11-29 05:43:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536186554] [2023-11-29 05:43:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:25,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:25,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553612394] [2023-11-29 05:43:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:25,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:25,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:43:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:25,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:43:25,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 483 proven. 30 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-11-29 05:43:25,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:43:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536186554] [2023-11-29 05:43:25,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553612394] [2023-11-29 05:43:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553612394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:43:25,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:43:25,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 05:43:25,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493542403] [2023-11-29 05:43:25,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:43:25,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:43:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:43:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:43:25,717 INFO L87 Difference]: Start difference. First operand 1388 states and 2161 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:43:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:26,216 INFO L93 Difference]: Finished difference Result 1983 states and 3037 transitions. [2023-11-29 05:43:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:43:26,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 143 [2023-11-29 05:43:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:26,222 INFO L225 Difference]: With dead ends: 1983 [2023-11-29 05:43:26,222 INFO L226 Difference]: Without dead ends: 1219 [2023-11-29 05:43:26,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:43:26,225 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 363 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:26,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 501 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:43:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-11-29 05:43:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1183. [2023-11-29 05:43:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 868 states have (on average 1.3940092165898617) internal successors, (1210), 868 states have internal predecessors, (1210), 286 states have call successors, (286), 28 states have call predecessors, (286), 28 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-11-29 05:43:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1782 transitions. [2023-11-29 05:43:26,364 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1782 transitions. Word has length 143 [2023-11-29 05:43:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1782 transitions. [2023-11-29 05:43:26,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:43:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1782 transitions. [2023-11-29 05:43:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:43:26,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:26,366 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:26,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:43:26,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:43:26,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:26,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:26,567 INFO L85 PathProgramCache]: Analyzing trace with hash -386847737, now seen corresponding path program 1 times [2023-11-29 05:43:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:26,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622424091] [2023-11-29 05:43:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:26,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:26,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157818711] [2023-11-29 05:43:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:26,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:26,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:26,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:26,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:43:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 05:43:26,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:43:31,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:43:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:31,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622424091] [2023-11-29 05:43:31,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:31,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157818711] [2023-11-29 05:43:31,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157818711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:31,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:31,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:43:31,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695372838] [2023-11-29 05:43:31,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:43:31,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:43:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:43:31,131 INFO L87 Difference]: Start difference. First operand 1183 states and 1782 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:36,913 INFO L93 Difference]: Finished difference Result 2287 states and 3448 transitions. [2023-11-29 05:43:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:43:36,913 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-11-29 05:43:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:36,920 INFO L225 Difference]: With dead ends: 2287 [2023-11-29 05:43:36,920 INFO L226 Difference]: Without dead ends: 1325 [2023-11-29 05:43:36,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:43:36,923 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 344 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:36,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 669 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 05:43:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-11-29 05:43:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1217. [2023-11-29 05:43:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 899 states have (on average 1.3870967741935485) internal successors, (1247), 899 states have internal predecessors, (1247), 286 states have call successors, (286), 31 states have call predecessors, (286), 31 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-11-29 05:43:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1819 transitions. [2023-11-29 05:43:37,108 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1819 transitions. Word has length 143 [2023-11-29 05:43:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:37,108 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1819 transitions. [2023-11-29 05:43:37,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1819 transitions. [2023-11-29 05:43:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:43:37,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:37,110 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:37,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:43:37,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:43:37,311 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:37,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash -329589435, now seen corresponding path program 1 times [2023-11-29 05:43:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:37,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840625547] [2023-11-29 05:43:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:37,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574492928] [2023-11-29 05:43:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:37,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:37,334 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:37,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:43:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:37,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:43:37,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:43:42,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:43:42,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:42,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840625547] [2023-11-29 05:43:42,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574492928] [2023-11-29 05:43:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574492928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:42,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:43:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683279410] [2023-11-29 05:43:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:42,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:43:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:43:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:43:42,839 INFO L87 Difference]: Start difference. First operand 1217 states and 1819 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:50,135 INFO L93 Difference]: Finished difference Result 2317 states and 3477 transitions. [2023-11-29 05:43:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:43:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-11-29 05:43:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:50,142 INFO L225 Difference]: With dead ends: 2317 [2023-11-29 05:43:50,142 INFO L226 Difference]: Without dead ends: 1325 [2023-11-29 05:43:50,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:43:50,145 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 297 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:50,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 647 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 05:43:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-11-29 05:43:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1223. [2023-11-29 05:43:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 905 states have (on average 1.3867403314917126) internal successors, (1255), 905 states have internal predecessors, (1255), 286 states have call successors, (286), 31 states have call predecessors, (286), 31 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-11-29 05:43:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1827 transitions. [2023-11-29 05:43:50,297 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1827 transitions. Word has length 143 [2023-11-29 05:43:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:50,297 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1827 transitions. [2023-11-29 05:43:50,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1827 transitions. [2023-11-29 05:43:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:43:50,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:50,298 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:50,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:43:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:43:50,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:50,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash 50486743, now seen corresponding path program 1 times [2023-11-29 05:43:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690723608] [2023-11-29 05:43:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:50,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:50,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209815683] [2023-11-29 05:43:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:50,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:50,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:50,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:43:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:50,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:43:50,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:43:51,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:43:51,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690723608] [2023-11-29 05:43:51,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209815683] [2023-11-29 05:43:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209815683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:51,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:51,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:43:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047446481] [2023-11-29 05:43:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:51,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:43:51,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:43:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:43:51,969 INFO L87 Difference]: Start difference. First operand 1223 states and 1827 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:52,963 INFO L93 Difference]: Finished difference Result 1661 states and 2487 transitions. [2023-11-29 05:43:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:43:52,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:43:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:52,970 INFO L225 Difference]: With dead ends: 1661 [2023-11-29 05:43:52,970 INFO L226 Difference]: Without dead ends: 1427 [2023-11-29 05:43:52,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:43:52,972 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 244 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:52,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 719 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:43:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-11-29 05:43:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1251. [2023-11-29 05:43:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 933 states have (on average 1.3869239013933548) internal successors, (1294), 933 states have internal predecessors, (1294), 286 states have call successors, (286), 31 states have call predecessors, (286), 31 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-11-29 05:43:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1866 transitions. [2023-11-29 05:43:53,165 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1866 transitions. Word has length 144 [2023-11-29 05:43:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:53,166 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1866 transitions. [2023-11-29 05:43:53,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1866 transitions. [2023-11-29 05:43:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:43:53,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:53,167 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:53,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:43:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:43:53,368 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:53,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash 107745045, now seen corresponding path program 1 times [2023-11-29 05:43:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160002260] [2023-11-29 05:43:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:53,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:53,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59052269] [2023-11-29 05:43:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:53,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:53,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:53,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:53,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:43:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:53,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:43:53,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:43:55,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:43:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:55,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160002260] [2023-11-29 05:43:55,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:55,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59052269] [2023-11-29 05:43:55,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59052269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:55,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:55,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:43:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863844039] [2023-11-29 05:43:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:55,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:43:55,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:43:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:43:55,025 INFO L87 Difference]: Start difference. First operand 1251 states and 1866 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:56,596 INFO L93 Difference]: Finished difference Result 2078 states and 3119 transitions. [2023-11-29 05:43:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:43:56,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:43:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:56,605 INFO L225 Difference]: With dead ends: 2078 [2023-11-29 05:43:56,605 INFO L226 Difference]: Without dead ends: 1795 [2023-11-29 05:43:56,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:43:56,607 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 599 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:56,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 874 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:43:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2023-11-29 05:43:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1517. [2023-11-29 05:43:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1127 states have (on average 1.391304347826087) internal successors, (1568), 1127 states have internal predecessors, (1568), 352 states have call successors, (352), 37 states have call predecessors, (352), 37 states have return successors, (352), 352 states have call predecessors, (352), 352 states have call successors, (352) [2023-11-29 05:43:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2272 transitions. [2023-11-29 05:43:56,871 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2272 transitions. Word has length 144 [2023-11-29 05:43:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:56,872 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2272 transitions. [2023-11-29 05:43:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:43:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2272 transitions. [2023-11-29 05:43:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:43:56,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:56,874 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:56,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:43:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:43:57,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:57,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash -516792805, now seen corresponding path program 1 times [2023-11-29 05:43:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032748117] [2023-11-29 05:43:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:57,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401641170] [2023-11-29 05:43:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:57,096 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:57,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:43:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:57,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 05:43:57,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 429 proven. 174 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 05:44:00,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:44:07,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:07,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032748117] [2023-11-29 05:44:07,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401641170] [2023-11-29 05:44:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401641170] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [27] total 35 [2023-11-29 05:44:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920091836] [2023-11-29 05:44:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:44:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:44:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:44:07,136 INFO L87 Difference]: Start difference. First operand 1517 states and 2272 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:12,989 INFO L93 Difference]: Finished difference Result 2672 states and 4010 transitions. [2023-11-29 05:44:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:44:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:44:12,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:12,999 INFO L225 Difference]: With dead ends: 2672 [2023-11-29 05:44:12,999 INFO L226 Difference]: Without dead ends: 2178 [2023-11-29 05:44:13,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=321, Invalid=1659, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 05:44:13,002 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 345 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:13,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 478 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 05:44:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2023-11-29 05:44:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1776. [2023-11-29 05:44:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1332 states have (on average 1.397897897897898) internal successors, (1862), 1341 states have internal predecessors, (1862), 397 states have call successors, (397), 46 states have call predecessors, (397), 46 states have return successors, (397), 388 states have call predecessors, (397), 397 states have call successors, (397) [2023-11-29 05:44:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2656 transitions. [2023-11-29 05:44:13,264 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2656 transitions. Word has length 144 [2023-11-29 05:44:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:13,264 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2656 transitions. [2023-11-29 05:44:13,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2656 transitions. [2023-11-29 05:44:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:44:13,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:13,266 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:13,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:44:13,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:44:13,467 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:13,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -459534503, now seen corresponding path program 1 times [2023-11-29 05:44:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298028691] [2023-11-29 05:44:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:13,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159237545] [2023-11-29 05:44:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:13,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:13,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:13,489 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:13,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:44:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:13,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:44:13,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:44:15,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:44:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298028691] [2023-11-29 05:44:15,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159237545] [2023-11-29 05:44:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159237545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:44:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430481493] [2023-11-29 05:44:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:15,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:44:15,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:44:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:44:15,146 INFO L87 Difference]: Start difference. First operand 1776 states and 2656 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:16,976 INFO L93 Difference]: Finished difference Result 3474 states and 5217 transitions. [2023-11-29 05:44:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:44:16,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:44:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:16,990 INFO L225 Difference]: With dead ends: 3474 [2023-11-29 05:44:16,991 INFO L226 Difference]: Without dead ends: 2777 [2023-11-29 05:44:16,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:44:16,993 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 464 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:16,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 766 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:44:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2023-11-29 05:44:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2054. [2023-11-29 05:44:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1535 states have (on average 1.3947882736156352) internal successors, (2141), 1544 states have internal predecessors, (2141), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-11-29 05:44:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3067 transitions. [2023-11-29 05:44:17,277 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3067 transitions. Word has length 144 [2023-11-29 05:44:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3067 transitions. [2023-11-29 05:44:17,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3067 transitions. [2023-11-29 05:44:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:44:17,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:17,279 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:17,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:44:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:44:17,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:17,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1527040313, now seen corresponding path program 1 times [2023-11-29 05:44:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879182099] [2023-11-29 05:44:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:17,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937194413] [2023-11-29 05:44:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:17,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:17,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:17,496 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:17,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:44:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:17,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:44:17,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:44:19,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:44:19,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:19,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879182099] [2023-11-29 05:44:19,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:19,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937194413] [2023-11-29 05:44:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937194413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:19,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:44:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531076509] [2023-11-29 05:44:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:44:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:44:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:19,113 INFO L87 Difference]: Start difference. First operand 2054 states and 3067 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:22,187 INFO L93 Difference]: Finished difference Result 3955 states and 5906 transitions. [2023-11-29 05:44:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:44:22,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:44:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:22,200 INFO L225 Difference]: With dead ends: 3955 [2023-11-29 05:44:22,200 INFO L226 Difference]: Without dead ends: 2132 [2023-11-29 05:44:22,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:44:22,205 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 255 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:22,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 512 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:44:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2023-11-29 05:44:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2050. [2023-11-29 05:44:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1531 states have (on average 1.3905943827563685) internal successors, (2129), 1540 states have internal predecessors, (2129), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-11-29 05:44:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3055 transitions. [2023-11-29 05:44:22,493 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3055 transitions. Word has length 144 [2023-11-29 05:44:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:22,493 INFO L495 AbstractCegarLoop]: Abstraction has 2050 states and 3055 transitions. [2023-11-29 05:44:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3055 transitions. [2023-11-29 05:44:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:44:22,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:22,495 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:22,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:44:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:44:22,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:22,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1469782011, now seen corresponding path program 1 times [2023-11-29 05:44:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43505335] [2023-11-29 05:44:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:22,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:22,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687476985] [2023-11-29 05:44:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:22,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:22,715 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:22,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:44:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:22,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:44:22,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:44:29,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:44:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43505335] [2023-11-29 05:44:29,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687476985] [2023-11-29 05:44:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687476985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:29,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:44:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418165251] [2023-11-29 05:44:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:44:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:44:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:44:29,083 INFO L87 Difference]: Start difference. First operand 2050 states and 3055 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:36,815 INFO L93 Difference]: Finished difference Result 3080 states and 4619 transitions. [2023-11-29 05:44:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:44:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:44:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:36,827 INFO L225 Difference]: With dead ends: 3080 [2023-11-29 05:44:36,828 INFO L226 Difference]: Without dead ends: 2158 [2023-11-29 05:44:36,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:44:36,831 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 316 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:36,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 873 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 05:44:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2023-11-29 05:44:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2060. [2023-11-29 05:44:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1541 states have (on average 1.3906554185593771) internal successors, (2143), 1550 states have internal predecessors, (2143), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-11-29 05:44:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3069 transitions. [2023-11-29 05:44:37,108 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3069 transitions. Word has length 144 [2023-11-29 05:44:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:37,108 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 3069 transitions. [2023-11-29 05:44:37,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3069 transitions. [2023-11-29 05:44:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:44:37,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:37,109 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:37,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:44:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:44:37,310 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:37,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1210986687, now seen corresponding path program 1 times [2023-11-29 05:44:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:37,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056133269] [2023-11-29 05:44:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:37,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:37,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793051967] [2023-11-29 05:44:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:37,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:37,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:37,330 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:37,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:44:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:37,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:44:37,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:44:45,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:44:45,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:45,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056133269] [2023-11-29 05:44:45,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:45,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793051967] [2023-11-29 05:44:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793051967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:45,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:45,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:44:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960478838] [2023-11-29 05:44:45,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:44:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:44:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:44:45,041 INFO L87 Difference]: Start difference. First operand 2060 states and 3069 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:53,371 INFO L93 Difference]: Finished difference Result 3980 states and 5958 transitions. [2023-11-29 05:44:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:44:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-11-29 05:44:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:53,380 INFO L225 Difference]: With dead ends: 3980 [2023-11-29 05:44:53,380 INFO L226 Difference]: Without dead ends: 2164 [2023-11-29 05:44:53,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:44:53,385 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 305 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:53,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 609 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 05:44:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2023-11-29 05:44:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2070. [2023-11-29 05:44:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1551 states have (on average 1.390715667311412) internal successors, (2157), 1560 states have internal predecessors, (2157), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-11-29 05:44:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3083 transitions. [2023-11-29 05:44:53,691 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3083 transitions. Word has length 144 [2023-11-29 05:44:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:53,692 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 3083 transitions. [2023-11-29 05:44:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:44:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3083 transitions. [2023-11-29 05:44:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 05:44:53,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:53,693 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:53,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:44:53,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:53,894 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:53,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1013417344, now seen corresponding path program 1 times [2023-11-29 05:44:53,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985401859] [2023-11-29 05:44:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:53,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396570712] [2023-11-29 05:44:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:53,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:53,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:53,912 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:53,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:44:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:54,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:44:54,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 471 proven. 36 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-11-29 05:44:54,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 27 proven. 36 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:44:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985401859] [2023-11-29 05:44:54,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396570712] [2023-11-29 05:44:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396570712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:44:54,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:44:54,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 05:44:54,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387496244] [2023-11-29 05:44:54,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:44:54,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:44:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:44:54,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:44:54,466 INFO L87 Difference]: Start difference. First operand 2070 states and 3083 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:44:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:57,331 INFO L93 Difference]: Finished difference Result 7132 states and 10425 transitions. [2023-11-29 05:44:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 05:44:57,331 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 145 [2023-11-29 05:44:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:57,346 INFO L225 Difference]: With dead ends: 7132 [2023-11-29 05:44:57,346 INFO L226 Difference]: Without dead ends: 5801 [2023-11-29 05:44:57,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 05:44:57,351 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1648 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:57,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1515 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:44:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2023-11-29 05:44:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 4316. [2023-11-29 05:44:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 3169 states have (on average 1.3692016408961818) internal successors, (4339), 3209 states have internal predecessors, (4339), 986 states have call successors, (986), 160 states have call predecessors, (986), 160 states have return successors, (986), 946 states have call predecessors, (986), 986 states have call successors, (986) [2023-11-29 05:44:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 6311 transitions. [2023-11-29 05:44:58,102 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 6311 transitions. Word has length 145 [2023-11-29 05:44:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:58,103 INFO L495 AbstractCegarLoop]: Abstraction has 4316 states and 6311 transitions. [2023-11-29 05:44:58,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:44:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 6311 transitions. [2023-11-29 05:44:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:44:58,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:58,104 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:58,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:44:58,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:58,305 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:58,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1355636636, now seen corresponding path program 1 times [2023-11-29 05:44:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:58,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445232887] [2023-11-29 05:44:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:58,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:58,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791714698] [2023-11-29 05:44:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:58,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:58,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:58,322 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:58,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:44:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:58,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 05:44:58,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-29 05:45:54,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:45:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445232887] [2023-11-29 05:45:54,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791714698] [2023-11-29 05:45:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791714698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:54,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:54,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 05:45:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794641503] [2023-11-29 05:45:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:54,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:45:54,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:45:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:45:54,183 INFO L87 Difference]: Start difference. First operand 4316 states and 6311 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:45:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:55,715 INFO L93 Difference]: Finished difference Result 8877 states and 12922 transitions. [2023-11-29 05:45:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:45:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-11-29 05:45:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:55,730 INFO L225 Difference]: With dead ends: 8877 [2023-11-29 05:45:55,730 INFO L226 Difference]: Without dead ends: 4628 [2023-11-29 05:45:55,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:45:55,741 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 321 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:55,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 761 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:45:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2023-11-29 05:45:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4362. [2023-11-29 05:45:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3215 states have (on average 1.3673405909797822) internal successors, (4396), 3255 states have internal predecessors, (4396), 986 states have call successors, (986), 160 states have call predecessors, (986), 160 states have return successors, (986), 946 states have call predecessors, (986), 986 states have call successors, (986) [2023-11-29 05:45:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 6368 transitions. [2023-11-29 05:45:56,352 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 6368 transitions. Word has length 146 [2023-11-29 05:45:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:56,353 INFO L495 AbstractCegarLoop]: Abstraction has 4362 states and 6368 transitions. [2023-11-29 05:45:56,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 05:45:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 6368 transitions. [2023-11-29 05:45:56,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:45:56,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:56,354 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:56,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:45:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:56,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:56,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1660837600, now seen corresponding path program 1 times [2023-11-29 05:45:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831125842] [2023-11-29 05:45:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:56,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:56,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170179891] [2023-11-29 05:45:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:56,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:56,573 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:56,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c91a4f-4afa-49c1-90c0-95b49b71af4e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:45:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:56,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:45:56,714 INFO L285 TraceCheckSpWp]: Computing forward predicates...