./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/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_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/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_9b2deef8-9176-4431-9471-bbc0e50cc83c/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 c9a61aaa8a2d24f80a58e864d1bce01bb7b7956b51190c2b8e5fc48a6872e407 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:13:59,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:13:59,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:13:59,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:13:59,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:13:59,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:13:59,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:13:59,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:13:59,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:13:59,236 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:13:59,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:13:59,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:13:59,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:13:59,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:13:59,239 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:13:59,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:13:59,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:13:59,241 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:13:59,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:13:59,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:13:59,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:13:59,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:13:59,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:13:59,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:13:59,244 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:13:59,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:13:59,245 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:13:59,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:13:59,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:13:59,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:13:59,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:13:59,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:13:59,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:13:59,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:13:59,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:13:59,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:13:59,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:13:59,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:13:59,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:13:59,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:13:59,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:13:59,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:13:59,258 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_9b2deef8-9176-4431-9471-bbc0e50cc83c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a61aaa8a2d24f80a58e864d1bce01bb7b7956b51190c2b8e5fc48a6872e407 [2023-11-29 04:13:59,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:13:59,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:13:59,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:13:59,489 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:13:59,490 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:13:59,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i [2023-11-29 04:14:02,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:14:02,445 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:14:02,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i [2023-11-29 04:14:02,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/data/a807ef1e2/255146557c564dac8f72ba69fe28839d/FLAG16b8960b1 [2023-11-29 04:14:02,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/data/a807ef1e2/255146557c564dac8f72ba69fe28839d [2023-11-29 04:14:02,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:14:02,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:14:02,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:14:02,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:14:02,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:14:02,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c238dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02, skipping insertion in model container [2023-11-29 04:14:02,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:14:02,634 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_9b2deef8-9176-4431-9471-bbc0e50cc83c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i[919,932] [2023-11-29 04:14:02,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:14:02,710 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:14:02,723 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_9b2deef8-9176-4431-9471-bbc0e50cc83c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i[919,932] [2023-11-29 04:14:02,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:14:02,775 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:14:02,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02 WrapperNode [2023-11-29 04:14:02,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:14:02,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:14:02,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:14:02,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:14:02,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,839 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2023-11-29 04:14:02,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:14:02,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:14:02,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:14:02,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:14:02,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,874 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 04:14:02,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:14:02,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:14:02,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:14:02,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:14:02,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (1/1) ... [2023-11-29 04:14:02,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:14:02,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:02,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:14:02,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:14:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:14:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:14:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:14:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:14:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:14:02,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:14:03,081 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:14:03,083 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:14:03,489 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:14:03,572 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:14:03,572 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:14:03,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:14:03 BoogieIcfgContainer [2023-11-29 04:14:03,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:14:03,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:14:03,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:14:03,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:14:03,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:14:02" (1/3) ... [2023-11-29 04:14:03,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e0bec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:14:03, skipping insertion in model container [2023-11-29 04:14:03,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:02" (2/3) ... [2023-11-29 04:14:03,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e0bec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:14:03, skipping insertion in model container [2023-11-29 04:14:03,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:14:03" (3/3) ... [2023-11-29 04:14:03,582 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i [2023-11-29 04:14:03,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:14:03,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:14:03,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:14:03,660 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;@3dbe9610, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:14:03,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:14:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 04:14:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 04:14:03,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:03,680 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:03,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:03,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1674842438, now seen corresponding path program 1 times [2023-11-29 04:14:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:03,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637283392] [2023-11-29 04:14:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:03,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637283392] [2023-11-29 04:14:03,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:14:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162913289] [2023-11-29 04:14:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:03,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:03,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:03,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:14:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:04,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:14:04,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-11-29 04:14:04,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:04,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162913289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:04,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:04,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:14:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064665022] [2023-11-29 04:14:04,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:04,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:14:04,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:14:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:14:04,191 INFO L87 Difference]: Start difference. First operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 04:14:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:04,234 INFO L93 Difference]: Finished difference Result 183 states and 331 transitions. [2023-11-29 04:14:04,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:14:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2023-11-29 04:14:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:04,246 INFO L225 Difference]: With dead ends: 183 [2023-11-29 04:14:04,246 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 04:14:04,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 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 04:14:04,254 INFO L413 NwaCegarLoop]: 145 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, 145 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 04:14:04,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:14:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 04:14:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 04:14:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 04:14:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 148 transitions. [2023-11-29 04:14:04,307 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 148 transitions. Word has length 175 [2023-11-29 04:14:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:04,307 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 148 transitions. [2023-11-29 04:14:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 04:14:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 148 transitions. [2023-11-29 04:14:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 04:14:04,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:04,313 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:04,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:14:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:14:04,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:04,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -826034316, now seen corresponding path program 1 times [2023-11-29 04:14:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809109745] [2023-11-29 04:14:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:04,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140874446] [2023-11-29 04:14:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:04,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:04,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:04,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:14:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:04,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:14:04,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:14:05,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:05,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809109745] [2023-11-29 04:14:05,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140874446] [2023-11-29 04:14:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140874446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:14:05,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604953205] [2023-11-29 04:14:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:05,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:14:05,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:14:05,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:14:05,079 INFO L87 Difference]: Start difference. First operand 91 states and 148 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:05,545 INFO L93 Difference]: Finished difference Result 282 states and 460 transitions. [2023-11-29 04:14:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:14:05,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-11-29 04:14:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:05,550 INFO L225 Difference]: With dead ends: 282 [2023-11-29 04:14:05,550 INFO L226 Difference]: Without dead ends: 192 [2023-11-29 04:14:05,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 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 04:14:05,553 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 201 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:05,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 496 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:14:05,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-29 04:14:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 93. [2023-11-29 04:14:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.5) internal successors, (96), 64 states have internal predecessors, (96), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 04:14:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 150 transitions. [2023-11-29 04:14:05,577 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 150 transitions. Word has length 175 [2023-11-29 04:14:05,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:05,579 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 150 transitions. [2023-11-29 04:14:05,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 150 transitions. [2023-11-29 04:14:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 04:14:05,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:05,583 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:05,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:14:05,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:05,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:05,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash 508868654, now seen corresponding path program 1 times [2023-11-29 04:14:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:05,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300030512] [2023-11-29 04:14:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:05,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:05,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212371964] [2023-11-29 04:14:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:05,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:05,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:05,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:05,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:14:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:05,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:14:05,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:14:06,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:06,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300030512] [2023-11-29 04:14:06,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:06,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212371964] [2023-11-29 04:14:06,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212371964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:06,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:06,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:14:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136957618] [2023-11-29 04:14:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:06,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:14:06,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:06,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:14:06,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:14:06,559 INFO L87 Difference]: Start difference. First operand 93 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:06,617 INFO L93 Difference]: Finished difference Result 316 states and 511 transitions. [2023-11-29 04:14:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:14:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-11-29 04:14:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:06,622 INFO L225 Difference]: With dead ends: 316 [2023-11-29 04:14:06,623 INFO L226 Difference]: Without dead ends: 224 [2023-11-29 04:14:06,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:14:06,625 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 263 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:06,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 424 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:14:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-29 04:14:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 185. [2023-11-29 04:14:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 128 states have (on average 1.4921875) internal successors, (191), 128 states have internal predecessors, (191), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 04:14:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 299 transitions. [2023-11-29 04:14:06,662 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 299 transitions. Word has length 176 [2023-11-29 04:14:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:06,662 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 299 transitions. [2023-11-29 04:14:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 299 transitions. [2023-11-29 04:14:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:14:06,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:06,666 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:06,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:14:06,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:06,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:06,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1463201884, now seen corresponding path program 1 times [2023-11-29 04:14:06,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:06,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767706625] [2023-11-29 04:14:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:06,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:06,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:06,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014223350] [2023-11-29 04:14:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:06,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:06,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:06,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:06,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:14:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:07,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:14:07,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:14:07,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:07,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767706625] [2023-11-29 04:14:07,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014223350] [2023-11-29 04:14:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014223350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:07,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:07,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:14:07,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603510399] [2023-11-29 04:14:07,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:07,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:14:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:14:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:14:07,262 INFO L87 Difference]: Start difference. First operand 185 states and 299 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:07,439 INFO L93 Difference]: Finished difference Result 499 states and 806 transitions. [2023-11-29 04:14:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:14:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 04:14:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:07,443 INFO L225 Difference]: With dead ends: 499 [2023-11-29 04:14:07,444 INFO L226 Difference]: Without dead ends: 315 [2023-11-29 04:14:07,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 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 04:14:07,446 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 96 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:07,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 421 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:14:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-29 04:14:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 245. [2023-11-29 04:14:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.44375) internal successors, (231), 160 states have internal predecessors, (231), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 04:14:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 393 transitions. [2023-11-29 04:14:07,490 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 393 transitions. Word has length 177 [2023-11-29 04:14:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:07,491 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 393 transitions. [2023-11-29 04:14:07,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 393 transitions. [2023-11-29 04:14:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:14:07,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:07,494 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:07,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:14:07,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:07,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:07,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2014116962, now seen corresponding path program 1 times [2023-11-29 04:14:07,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:07,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320395141] [2023-11-29 04:14:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:07,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398829209] [2023-11-29 04:14:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:07,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:07,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:07,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:14:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:07,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:14:07,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 518 proven. 60 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-11-29 04:14:08,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-11-29 04:14:09,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320395141] [2023-11-29 04:14:09,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398829209] [2023-11-29 04:14:09,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398829209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:09,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:14:09,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 04:14:09,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449601933] [2023-11-29 04:14:09,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:09,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:14:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:09,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:14:09,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:14:09,034 INFO L87 Difference]: Start difference. First operand 245 states and 393 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 04:14:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:12,765 INFO L93 Difference]: Finished difference Result 1645 states and 2612 transitions. [2023-11-29 04:14:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 04:14:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 177 [2023-11-29 04:14:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:12,777 INFO L225 Difference]: With dead ends: 1645 [2023-11-29 04:14:12,777 INFO L226 Difference]: Without dead ends: 1461 [2023-11-29 04:14:12,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=953, Invalid=2127, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 04:14:12,781 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2362 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 1293 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1108 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 04:14:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-11-29 04:14:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 803. [2023-11-29 04:14:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 543 states have (on average 1.4401473296500922) internal successors, (782), 545 states have internal predecessors, (782), 243 states have call successors, (243), 16 states have call predecessors, (243), 16 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2023-11-29 04:14:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1268 transitions. [2023-11-29 04:14:12,975 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1268 transitions. Word has length 177 [2023-11-29 04:14:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:12,976 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1268 transitions. [2023-11-29 04:14:12,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 04:14:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1268 transitions. [2023-11-29 04:14:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:14:12,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:12,979 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:12,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:14:13,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:13,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:13,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1579785756, now seen corresponding path program 1 times [2023-11-29 04:14:13,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:13,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028848403] [2023-11-29 04:14:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:13,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584151683] [2023-11-29 04:14:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:13,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:13,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:13,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:13,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:14:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:13,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:14:13,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-11-29 04:14:14,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028848403] [2023-11-29 04:14:24,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584151683] [2023-11-29 04:14:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584151683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:24,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:14:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 04:14:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358160561] [2023-11-29 04:14:24,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:14:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:14:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:14:24,042 INFO L87 Difference]: Start difference. First operand 803 states and 1268 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 04:14:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:26,116 INFO L93 Difference]: Finished difference Result 1795 states and 2838 transitions. [2023-11-29 04:14:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:14:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-11-29 04:14:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:26,126 INFO L225 Difference]: With dead ends: 1795 [2023-11-29 04:14:26,126 INFO L226 Difference]: Without dead ends: 1045 [2023-11-29 04:14:26,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=286, Invalid=1120, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 04:14:26,130 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 612 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:26,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 749 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:14:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-11-29 04:14:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 951. [2023-11-29 04:14:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 690 states have (on average 1.4710144927536233) internal successors, (1015), 692 states have internal predecessors, (1015), 243 states have call successors, (243), 17 states have call predecessors, (243), 17 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2023-11-29 04:14:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1501 transitions. [2023-11-29 04:14:26,292 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1501 transitions. Word has length 177 [2023-11-29 04:14:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:26,293 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1501 transitions. [2023-11-29 04:14:26,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 04:14:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1501 transitions. [2023-11-29 04:14:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:14:26,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:26,296 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:26,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:14:26,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:26,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:26,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:26,497 INFO L85 PathProgramCache]: Analyzing trace with hash 992979742, now seen corresponding path program 1 times [2023-11-29 04:14:26,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:26,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861057359] [2023-11-29 04:14:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:26,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:26,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108461320] [2023-11-29 04:14:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:26,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:26,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:14:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:26,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:14:26,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:14:38,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:38,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861057359] [2023-11-29 04:14:38,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108461320] [2023-11-29 04:14:38,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108461320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:38,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:14:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792124909] [2023-11-29 04:14:38,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:38,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:14:38,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:14:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:14:38,097 INFO L87 Difference]: Start difference. First operand 951 states and 1501 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:49,498 INFO L93 Difference]: Finished difference Result 1975 states and 3119 transitions. [2023-11-29 04:14:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:14:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 04:14:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:49,505 INFO L225 Difference]: With dead ends: 1975 [2023-11-29 04:14:49,505 INFO L226 Difference]: Without dead ends: 1237 [2023-11-29 04:14:49,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:14:49,508 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 646 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:49,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 654 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-29 04:14:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2023-11-29 04:14:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1070. [2023-11-29 04:14:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 802 states have (on average 1.4750623441396509) internal successors, (1183), 805 states have internal predecessors, (1183), 248 states have call successors, (248), 19 states have call predecessors, (248), 19 states have return successors, (248), 245 states have call predecessors, (248), 248 states have call successors, (248) [2023-11-29 04:14:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1679 transitions. [2023-11-29 04:14:49,617 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1679 transitions. Word has length 177 [2023-11-29 04:14:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1679 transitions. [2023-11-29 04:14:49,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:14:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1679 transitions. [2023-11-29 04:14:49,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:14:49,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:49,620 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:49,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:14:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:49,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:49,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1435317862, now seen corresponding path program 1 times [2023-11-29 04:14:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26621732] [2023-11-29 04:14:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:49,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728754262] [2023-11-29 04:14:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:49,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:49,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:49,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:49,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:14:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:50,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:14:50,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 591 proven. 171 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-29 04:15:02,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:15:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26621732] [2023-11-29 04:15:21,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:15:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728754262] [2023-11-29 04:15:21,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728754262] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:21,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:21,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-11-29 04:15:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72737618] [2023-11-29 04:15:21,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:21,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:15:21,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:15:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:15:21,441 INFO L87 Difference]: Start difference. First operand 1070 states and 1679 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:15:39,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:15:44,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:15:49,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:15:52,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:16:14,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:16:15,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:15,887 INFO L93 Difference]: Finished difference Result 2913 states and 4614 transitions. [2023-11-29 04:16:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:16:15,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 04:16:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:15,900 INFO L225 Difference]: With dead ends: 2913 [2023-11-29 04:16:15,900 INFO L226 Difference]: Without dead ends: 2080 [2023-11-29 04:16:15,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:16:15,904 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 359 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 685 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 3 Unknown, 0 Unchecked, 36.6s Time] [2023-11-29 04:16:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2023-11-29 04:16:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1086. [2023-11-29 04:16:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 877 states have (on average 1.4982896237172179) internal successors, (1314), 877 states have internal predecessors, (1314), 189 states have call successors, (189), 19 states have call predecessors, (189), 19 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-11-29 04:16:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1692 transitions. [2023-11-29 04:16:16,040 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1692 transitions. Word has length 177 [2023-11-29 04:16:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:16,041 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1692 transitions. [2023-11-29 04:16:16,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:16:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1692 transitions. [2023-11-29 04:16:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:16:16,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:16,043 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:16,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:16:16,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 04:16:16,248 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:16:16,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2022123876, now seen corresponding path program 1 times [2023-11-29 04:16:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:16:16,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43256546] [2023-11-29 04:16:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:16:16,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:16:16,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617510465] [2023-11-29 04:16:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:16:16,274 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:16:16,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:16:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:16,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:16:16,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:16:25,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:16:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:16:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43256546] [2023-11-29 04:16:25,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:16:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617510465] [2023-11-29 04:16:25,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617510465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:16:25,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:16:25,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:16:25,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770981985] [2023-11-29 04:16:25,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:16:25,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:16:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:25,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:16:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:16:25,446 INFO L87 Difference]: Start difference. First operand 1086 states and 1692 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:16:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:34,450 INFO L93 Difference]: Finished difference Result 2166 states and 3389 transitions. [2023-11-29 04:16:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:16:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 04:16:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:34,457 INFO L225 Difference]: With dead ends: 2166 [2023-11-29 04:16:34,457 INFO L226 Difference]: Without dead ends: 1354 [2023-11-29 04:16:34,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:16:34,459 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 377 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:34,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 947 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 04:16:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-11-29 04:16:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1078. [2023-11-29 04:16:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 869 states have (on average 1.4959723820483315) internal successors, (1300), 869 states have internal predecessors, (1300), 189 states have call successors, (189), 19 states have call predecessors, (189), 19 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-11-29 04:16:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1678 transitions. [2023-11-29 04:16:34,620 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1678 transitions. Word has length 177 [2023-11-29 04:16:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:34,620 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1678 transitions. [2023-11-29 04:16:34,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:16:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1678 transitions. [2023-11-29 04:16:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:16:34,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:34,623 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:34,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:16:34,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 04:16:34,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:16:34,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1941606283, now seen corresponding path program 1 times [2023-11-29 04:16:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:16:34,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109899204] [2023-11-29 04:16:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:34,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:16:34,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:16:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901411878] [2023-11-29 04:16:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:34,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:16:34,850 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:16:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:16:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:35,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:16:35,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-11-29 04:16:35,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:16:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:16:38,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:16:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109899204] [2023-11-29 04:16:38,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:16:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901411878] [2023-11-29 04:16:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901411878] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:16:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:16:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2023-11-29 04:16:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826741881] [2023-11-29 04:16:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:16:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:16:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:16:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:16:38,879 INFO L87 Difference]: Start difference. First operand 1078 states and 1678 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 04:16:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:42,781 INFO L93 Difference]: Finished difference Result 3998 states and 6373 transitions. [2023-11-29 04:16:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:16:42,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-11-29 04:16:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:42,796 INFO L225 Difference]: With dead ends: 3998 [2023-11-29 04:16:42,796 INFO L226 Difference]: Without dead ends: 3388 [2023-11-29 04:16:42,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 04:16:42,798 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 867 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:42,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1614 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 04:16:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2023-11-29 04:16:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1638. [2023-11-29 04:16:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1311 states have (on average 1.490465293668955) internal successors, (1954), 1311 states have internal predecessors, (1954), 297 states have call successors, (297), 29 states have call predecessors, (297), 29 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-11-29 04:16:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2548 transitions. [2023-11-29 04:16:43,111 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2548 transitions. Word has length 177 [2023-11-29 04:16:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:43,112 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2548 transitions. [2023-11-29 04:16:43,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 04:16:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2548 transitions. [2023-11-29 04:16:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:16:43,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:43,114 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:43,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:16:43,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:16:43,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:16:43,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1277694502, now seen corresponding path program 1 times [2023-11-29 04:16:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:16:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144918707] [2023-11-29 04:16:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:43,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:16:43,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:16:43,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883071742] [2023-11-29 04:16:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:43,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:16:43,336 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:16:43,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:16:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:43,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:16:43,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:16:55,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:16:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:16:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144918707] [2023-11-29 04:16:55,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:16:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883071742] [2023-11-29 04:16:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883071742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:16:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:16:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:16:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925904996] [2023-11-29 04:16:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:16:55,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:16:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:16:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:16:55,354 INFO L87 Difference]: Start difference. First operand 1638 states and 2548 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:17:06,722 INFO L93 Difference]: Finished difference Result 2621 states and 4088 transitions. [2023-11-29 04:17:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:17:06,723 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 04:17:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:17:06,732 INFO L225 Difference]: With dead ends: 2621 [2023-11-29 04:17:06,732 INFO L226 Difference]: Without dead ends: 2013 [2023-11-29 04:17:06,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:17:06,735 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 644 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:17:06,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 916 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-29 04:17:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-11-29 04:17:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1873. [2023-11-29 04:17:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1486 states have (on average 1.4865410497981157) internal successors, (2209), 1486 states have internal predecessors, (2209), 351 states have call successors, (351), 35 states have call predecessors, (351), 35 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-29 04:17:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2911 transitions. [2023-11-29 04:17:07,105 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2911 transitions. Word has length 177 [2023-11-29 04:17:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:17:07,106 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2911 transitions. [2023-11-29 04:17:07,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2911 transitions. [2023-11-29 04:17:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 04:17:07,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:17:07,108 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:07,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:17:07,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:07,309 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:17:07,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2169176, now seen corresponding path program 1 times [2023-11-29 04:17:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:07,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357732508] [2023-11-29 04:17:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:07,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:17:07,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239587239] [2023-11-29 04:17:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:07,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:07,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:07,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:17:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:07,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:17:07,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:17:15,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:17:15,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357732508] [2023-11-29 04:17:15,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:17:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239587239] [2023-11-29 04:17:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239587239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:15,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:15,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:17:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75865734] [2023-11-29 04:17:15,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:15,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:17:15,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:17:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:17:15,608 INFO L87 Difference]: Start difference. First operand 1873 states and 2911 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:25,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:17:25,907 INFO L93 Difference]: Finished difference Result 2843 states and 4423 transitions. [2023-11-29 04:17:25,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:17:25,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 04:17:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:17:25,917 INFO L225 Difference]: With dead ends: 2843 [2023-11-29 04:17:25,918 INFO L226 Difference]: Without dead ends: 2020 [2023-11-29 04:17:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:17:25,920 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 468 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:17:25,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1121 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-29 04:17:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-11-29 04:17:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1849. [2023-11-29 04:17:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1462 states have (on average 1.4835841313269493) internal successors, (2169), 1462 states have internal predecessors, (2169), 351 states have call successors, (351), 35 states have call predecessors, (351), 35 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-29 04:17:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2871 transitions. [2023-11-29 04:17:26,228 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2871 transitions. Word has length 177 [2023-11-29 04:17:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:17:26,228 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2871 transitions. [2023-11-29 04:17:26,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2871 transitions. [2023-11-29 04:17:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 04:17:26,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:17:26,231 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:26,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:17:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:26,431 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:17:26,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1127125927, now seen corresponding path program 1 times [2023-11-29 04:17:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732468025] [2023-11-29 04:17:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:26,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:17:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615978713] [2023-11-29 04:17:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:26,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:26,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:17:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:26,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:17:26,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:17:26,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:17:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732468025] [2023-11-29 04:17:26,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:17:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615978713] [2023-11-29 04:17:26,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615978713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:26,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:17:26,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826619523] [2023-11-29 04:17:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:17:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:17:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:17:26,592 INFO L87 Difference]: Start difference. First operand 1849 states and 2871 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:17:26,820 INFO L93 Difference]: Finished difference Result 2735 states and 4269 transitions. [2023-11-29 04:17:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:17:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 04:17:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:17:26,828 INFO L225 Difference]: With dead ends: 2735 [2023-11-29 04:17:26,828 INFO L226 Difference]: Without dead ends: 1849 [2023-11-29 04:17:26,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:17:26,830 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 30 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:17:26,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 252 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:17:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2023-11-29 04:17:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1849. [2023-11-29 04:17:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1462 states have (on average 1.472640218878249) internal successors, (2153), 1462 states have internal predecessors, (2153), 351 states have call successors, (351), 35 states have call predecessors, (351), 35 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-29 04:17:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2855 transitions. [2023-11-29 04:17:27,040 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2855 transitions. Word has length 178 [2023-11-29 04:17:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:17:27,041 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2855 transitions. [2023-11-29 04:17:27,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2855 transitions. [2023-11-29 04:17:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 04:17:27,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:17:27,042 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:27,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:17:27,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:17:27,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:17:27,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash 461221975, now seen corresponding path program 1 times [2023-11-29 04:17:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126360848] [2023-11-29 04:17:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:27,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:17:27,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712239870] [2023-11-29 04:17:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:27,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:27,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:27,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:27,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:17:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:27,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 04:17:27,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 645 proven. 249 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-11-29 04:17:32,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:17:35,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126360848] [2023-11-29 04:17:35,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:17:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712239870] [2023-11-29 04:17:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712239870] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:35,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:17:35,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [27] total 34 [2023-11-29 04:17:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287549813] [2023-11-29 04:17:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:17:35,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:17:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:17:35,122 INFO L87 Difference]: Start difference. First operand 1849 states and 2855 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:17:41,470 INFO L93 Difference]: Finished difference Result 3911 states and 6089 transitions. [2023-11-29 04:17:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:17:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 04:17:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:17:41,484 INFO L225 Difference]: With dead ends: 3911 [2023-11-29 04:17:41,484 INFO L226 Difference]: Without dead ends: 3183 [2023-11-29 04:17:41,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=439, Invalid=2423, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 04:17:41,487 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 538 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:17:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 746 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:17:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2023-11-29 04:17:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1953. [2023-11-29 04:17:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1554 states have (on average 1.4639639639639639) internal successors, (2275), 1554 states have internal predecessors, (2275), 351 states have call successors, (351), 47 states have call predecessors, (351), 47 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-29 04:17:41,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2977 transitions. [2023-11-29 04:17:41,734 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2977 transitions. Word has length 178 [2023-11-29 04:17:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:17:41,734 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 2977 transitions. [2023-11-29 04:17:41,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:17:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2977 transitions. [2023-11-29 04:17:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 04:17:41,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:17:41,736 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:41,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:17:41,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:17:41,937 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:17:41,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:41,937 INFO L85 PathProgramCache]: Analyzing trace with hash -348124651, now seen corresponding path program 1 times [2023-11-29 04:17:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:41,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454270833] [2023-11-29 04:17:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:41,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:17:41,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268720544] [2023-11-29 04:17:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:41,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:41,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:41,958 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:41,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:17:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:42,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 04:17:42,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 549 proven. 366 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2023-11-29 04:17:45,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 63 proven. 162 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2023-11-29 04:17:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454270833] [2023-11-29 04:17:52,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:17:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268720544] [2023-11-29 04:17:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268720544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:52,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:17:52,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24] total 52 [2023-11-29 04:17:52,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093960066] [2023-11-29 04:17:52,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:52,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 04:17:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 04:17:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=2108, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 04:17:52,785 INFO L87 Difference]: Start difference. First operand 1953 states and 2977 transitions. Second operand has 52 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 14 states have call successors, (54), 8 states have call predecessors, (54), 15 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2023-11-29 04:19:12,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:19:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:19:17,715 INFO L93 Difference]: Finished difference Result 16852 states and 26168 transitions. [2023-11-29 04:19:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-11-29 04:19:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 14 states have call successors, (54), 8 states have call predecessors, (54), 15 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) Word has length 178 [2023-11-29 04:19:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:19:17,761 INFO L225 Difference]: With dead ends: 16852 [2023-11-29 04:19:17,761 INFO L226 Difference]: Without dead ends: 15215 [2023-11-29 04:19:17,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19776 ImplicationChecksByTransitivity, 58.5s TimeCoverageRelationStatistics Valid=8880, Invalid=39300, Unknown=0, NotChecked=0, Total=48180 [2023-11-29 04:19:17,780 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 7560 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 8875 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7582 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 9853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 8875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:19:17,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7582 Valid, 5720 Invalid, 9853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [978 Valid, 8875 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2023-11-29 04:19:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2023-11-29 04:19:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 4307. [2023-11-29 04:19:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4307 states, 3416 states have (on average 1.4707259953161593) internal successors, (5024), 3416 states have internal predecessors, (5024), 783 states have call successors, (783), 107 states have call predecessors, (783), 107 states have return successors, (783), 783 states have call predecessors, (783), 783 states have call successors, (783) [2023-11-29 04:19:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 6590 transitions. [2023-11-29 04:19:19,276 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 6590 transitions. Word has length 178 [2023-11-29 04:19:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:19:19,276 INFO L495 AbstractCegarLoop]: Abstraction has 4307 states and 6590 transitions. [2023-11-29 04:19:19,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 14 states have call successors, (54), 8 states have call predecessors, (54), 15 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2023-11-29 04:19:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 6590 transitions. [2023-11-29 04:19:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 04:19:19,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:19:19,279 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:19,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:19:19,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:19,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:19:19,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash -125584039, now seen corresponding path program 1 times [2023-11-29 04:19:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:19,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947585860] [2023-11-29 04:19:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:19,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:19:19,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817362820] [2023-11-29 04:19:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:19,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:19,505 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:19,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:19:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:19,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:19:19,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:19:21,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:21,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947585860] [2023-11-29 04:19:21,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:19:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817362820] [2023-11-29 04:19:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817362820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:21,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:21,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:19:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808709938] [2023-11-29 04:19:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:21,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:19:21,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:19:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:19:21,863 INFO L87 Difference]: Start difference. First operand 4307 states and 6590 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:19:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:19:26,498 INFO L93 Difference]: Finished difference Result 10711 states and 16559 transitions. [2023-11-29 04:19:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:19:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 04:19:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:19:26,520 INFO L225 Difference]: With dead ends: 10711 [2023-11-29 04:19:26,521 INFO L226 Difference]: Without dead ends: 8851 [2023-11-29 04:19:26,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:19:26,526 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 864 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:19:26,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 912 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 04:19:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2023-11-29 04:19:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 6738. [2023-11-29 04:19:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 5363 states have (on average 1.4780906209211262) internal successors, (7927), 5363 states have internal predecessors, (7927), 1215 states have call successors, (1215), 159 states have call predecessors, (1215), 159 states have return successors, (1215), 1215 states have call predecessors, (1215), 1215 states have call successors, (1215) [2023-11-29 04:19:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 10357 transitions. [2023-11-29 04:19:29,001 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 10357 transitions. Word has length 178 [2023-11-29 04:19:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:19:29,002 INFO L495 AbstractCegarLoop]: Abstraction has 6738 states and 10357 transitions. [2023-11-29 04:19:29,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:19:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 10357 transitions. [2023-11-29 04:19:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 04:19:29,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:19:29,006 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:29,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:19:29,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:19:29,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:19:29,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:29,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1797008867, now seen corresponding path program 1 times [2023-11-29 04:19:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:29,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963155572] [2023-11-29 04:19:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:29,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:29,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:19:29,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955526389] [2023-11-29 04:19:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:29,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:29,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:29,230 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:29,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:19:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:29,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:19:29,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:19:31,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:31,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963155572] [2023-11-29 04:19:31,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:19:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955526389] [2023-11-29 04:19:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955526389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:31,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:19:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502819100] [2023-11-29 04:19:31,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:31,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:19:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:19:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:19:31,542 INFO L87 Difference]: Start difference. First operand 6738 states and 10357 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:19:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:19:36,791 INFO L93 Difference]: Finished difference Result 10623 states and 16475 transitions. [2023-11-29 04:19:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:19:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 04:19:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:19:36,809 INFO L225 Difference]: With dead ends: 10623 [2023-11-29 04:19:36,809 INFO L226 Difference]: Without dead ends: 9841 [2023-11-29 04:19:36,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:19:36,812 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 761 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:19:36,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1202 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:19:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2023-11-29 04:19:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 8226. [2023-11-29 04:19:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 6487 states have (on average 1.4795745336827502) internal successors, (9598), 6487 states have internal predecessors, (9598), 1539 states have call successors, (1539), 199 states have call predecessors, (1539), 199 states have return successors, (1539), 1539 states have call predecessors, (1539), 1539 states have call successors, (1539) [2023-11-29 04:19:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 12676 transitions. [2023-11-29 04:19:39,446 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 12676 transitions. Word has length 178 [2023-11-29 04:19:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:19:39,446 INFO L495 AbstractCegarLoop]: Abstraction has 8226 states and 12676 transitions. [2023-11-29 04:19:39,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:19:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 12676 transitions. [2023-11-29 04:19:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 04:19:39,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:19:39,449 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:39,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:19:39,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:19:39,649 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:19:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1316208871, now seen corresponding path program 1 times [2023-11-29 04:19:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:39,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443646056] [2023-11-29 04:19:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:39,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:19:39,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014994855] [2023-11-29 04:19:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:39,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:39,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:39,670 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:39,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:19:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:39,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:19:39,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 656 proven. 51 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2023-11-29 04:19:40,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-11-29 04:19:40,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:40,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443646056] [2023-11-29 04:19:40,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:19:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014994855] [2023-11-29 04:19:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014994855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:40,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:19:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 04:19:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868475933] [2023-11-29 04:19:40,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:19:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:19:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:19:40,362 INFO L87 Difference]: Start difference. First operand 8226 states and 12676 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 04:19:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:19:46,461 INFO L93 Difference]: Finished difference Result 13972 states and 21057 transitions. [2023-11-29 04:19:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 04:19:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 179 [2023-11-29 04:19:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:19:46,477 INFO L225 Difference]: With dead ends: 13972 [2023-11-29 04:19:46,477 INFO L226 Difference]: Without dead ends: 8368 [2023-11-29 04:19:46,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=742, Invalid=2680, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 04:19:46,487 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2294 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:19:46,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 1482 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:19:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8368 states. [2023-11-29 04:19:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8368 to 6549. [2023-11-29 04:19:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5004 states have (on average 1.4386490807354118) internal successors, (7199), 5018 states have internal predecessors, (7199), 1305 states have call successors, (1305), 239 states have call predecessors, (1305), 239 states have return successors, (1305), 1291 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-29 04:19:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9809 transitions. [2023-11-29 04:19:48,961 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9809 transitions. Word has length 179 [2023-11-29 04:19:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:19:48,962 INFO L495 AbstractCegarLoop]: Abstraction has 6549 states and 9809 transitions. [2023-11-29 04:19:48,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 04:19:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9809 transitions. [2023-11-29 04:19:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 04:19:48,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:19:48,963 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:48,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 04:19:49,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:19:49,164 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:19:49,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash -471297962, now seen corresponding path program 1 times [2023-11-29 04:19:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697688522] [2023-11-29 04:19:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:49,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:19:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330644298] [2023-11-29 04:19:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:49,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:49,183 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:49,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:19:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:49,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:19:49,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 04:19:49,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697688522] [2023-11-29 04:19:49,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:19:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330644298] [2023-11-29 04:19:49,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330644298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:49,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:49,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:19:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928362580] [2023-11-29 04:19:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:49,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:19:49,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:19:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:19:49,887 INFO L87 Difference]: Start difference. First operand 6549 states and 9809 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:19:52,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:19:52,970 INFO L93 Difference]: Finished difference Result 12270 states and 18330 transitions. [2023-11-29 04:19:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:19:52,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-11-29 04:19:52,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:19:52,987 INFO L225 Difference]: With dead ends: 12270 [2023-11-29 04:19:52,987 INFO L226 Difference]: Without dead ends: 7758 [2023-11-29 04:19:52,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:19:52,994 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 425 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:19:52,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 912 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:19:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2023-11-29 04:19:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 6568. [2023-11-29 04:19:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6568 states, 5023 states have (on average 1.437786183555644) internal successors, (7222), 5037 states have internal predecessors, (7222), 1305 states have call successors, (1305), 239 states have call predecessors, (1305), 239 states have return successors, (1305), 1291 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-29 04:19:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 9832 transitions. [2023-11-29 04:19:55,304 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 9832 transitions. Word has length 179 [2023-11-29 04:19:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:19:55,304 INFO L495 AbstractCegarLoop]: Abstraction has 6568 states and 9832 transitions. [2023-11-29 04:19:55,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 04:19:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 9832 transitions. [2023-11-29 04:19:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 04:19:55,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:19:55,306 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:55,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:55,506 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:19:55,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash -605311468, now seen corresponding path program 1 times [2023-11-29 04:19:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722541611] [2023-11-29 04:19:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:55,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:19:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112998215] [2023-11-29 04:19:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:55,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:55,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:55,526 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:55,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:19:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:55,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 04:19:55,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 561 proven. 129 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2023-11-29 04:19:56,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 24 proven. 54 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-11-29 04:19:56,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:56,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722541611] [2023-11-29 04:19:56,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:19:56,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112998215] [2023-11-29 04:19:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112998215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:56,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:19:56,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-11-29 04:19:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077669727] [2023-11-29 04:19:56,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 04:19:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 04:19:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:19:56,419 INFO L87 Difference]: Start difference. First operand 6568 states and 9832 transitions. Second operand has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 04:20:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:20:03,142 INFO L93 Difference]: Finished difference Result 19853 states and 29889 transitions. [2023-11-29 04:20:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 04:20:03,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 179 [2023-11-29 04:20:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:20:03,167 INFO L225 Difference]: With dead ends: 19853 [2023-11-29 04:20:03,167 INFO L226 Difference]: Without dead ends: 13845 [2023-11-29 04:20:03,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=892, Invalid=2530, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 04:20:03,178 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1041 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:20:03,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 2325 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:20:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13845 states. [2023-11-29 04:20:06,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13845 to 8081. [2023-11-29 04:20:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 6178 states have (on average 1.429426999028812) internal successors, (8831), 6196 states have internal predecessors, (8831), 1603 states have call successors, (1603), 299 states have call predecessors, (1603), 299 states have return successors, (1603), 1585 states have call predecessors, (1603), 1603 states have call successors, (1603) [2023-11-29 04:20:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 12037 transitions. [2023-11-29 04:20:06,482 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 12037 transitions. Word has length 179 [2023-11-29 04:20:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:20:06,482 INFO L495 AbstractCegarLoop]: Abstraction has 8081 states and 12037 transitions. [2023-11-29 04:20:06,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 04:20:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 12037 transitions. [2023-11-29 04:20:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-29 04:20:06,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:20:06,485 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:06,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:20:06,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:06,686 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:20:06,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash 797566899, now seen corresponding path program 1 times [2023-11-29 04:20:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523537992] [2023-11-29 04:20:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:06,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:06,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:20:06,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506800969] [2023-11-29 04:20:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:06,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:06,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:06,709 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:06,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2deef8-9176-4431-9471-bbc0e50cc83c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:20:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:06,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:20:06,863 INFO L285 TraceCheckSpWp]: Computing forward predicates...