./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB --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 f125cc7aacd874cf038c23c1026e9d4800627ec1cff77d2b841e959e87f90682 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:36:12,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:36:12,402 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:36:12,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:36:12,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:36:12,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:36:12,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:36:12,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:36:12,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:36:12,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:36:12,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:36:12,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:36:12,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:36:12,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:36:12,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:36:12,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:36:12,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:36:12,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:36:12,444 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:36:12,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:36:12,445 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:36:12,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:12,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:12,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:12,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:12,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:12,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:36:12,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:36:12,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:36:12,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:36:12,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:36:12,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:36:12,447 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB 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 -> f125cc7aacd874cf038c23c1026e9d4800627ec1cff77d2b841e959e87f90682 [2024-11-28 04:36:12,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:36:12,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:36:12,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:36:12,887 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:36:12,887 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:36:12,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-4.i [2024-11-28 04:36:16,602 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/data/d2b6d3df8/b624b2570aa349a69275cfdaea00482d/FLAG52ef15c7d [2024-11-28 04:36:17,071 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:36:17,072 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-4.i [2024-11-28 04:36:17,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/data/d2b6d3df8/b624b2570aa349a69275cfdaea00482d/FLAG52ef15c7d [2024-11-28 04:36:17,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/data/d2b6d3df8/b624b2570aa349a69275cfdaea00482d [2024-11-28 04:36:17,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:36:17,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:36:17,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:17,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:36:17,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:36:17,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c03fdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17, skipping insertion in model container [2024-11-28 04:36:17,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:36:17,386 WARN L250 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_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-4.i[915,928] [2024-11-28 04:36:17,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:17,561 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:36:17,573 WARN L250 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_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-4.i[915,928] [2024-11-28 04:36:17,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:17,686 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:36:17,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17 WrapperNode [2024-11-28 04:36:17,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:17,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:17,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:36:17,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:36:17,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,820 INFO L138 Inliner]: procedures = 26, calls = 86, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 503 [2024-11-28 04:36:17,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:17,825 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:36:17,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:36:17,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:36:17,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,871 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]. [2024-11-28 04:36:17,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,917 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:36:17,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:36:17,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:36:17,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:36:17,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (1/1) ... [2024-11-28 04:36:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:17,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:18,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:36:18,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:36:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:36:18,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:36:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:36:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:36:18,202 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:36:18,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:36:19,728 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-28 04:36:19,728 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:36:19,754 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:36:19,758 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:36:19,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:19 BoogieIcfgContainer [2024-11-28 04:36:19,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:36:19,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:36:19,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:36:19,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:36:19,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:36:17" (1/3) ... [2024-11-28 04:36:19,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f100e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:19, skipping insertion in model container [2024-11-28 04:36:19,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:17" (2/3) ... [2024-11-28 04:36:19,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f100e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:19, skipping insertion in model container [2024-11-28 04:36:19,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:19" (3/3) ... [2024-11-28 04:36:19,779 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-4.i [2024-11-28 04:36:19,801 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:36:19,806 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-4.i that has 2 procedures, 216 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:36:19,932 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:36:19,951 INFO L333 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, 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;@28dfb9ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:36:19,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:36:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 141 states have internal predecessors, (214), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-28 04:36:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-28 04:36:19,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:19,992 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:19,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:19,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 399539566, now seen corresponding path program 1 times [2024-11-28 04:36:20,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:20,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867316557] [2024-11-28 04:36:20,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:20,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2024-11-28 04:36:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:20,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867316557] [2024-11-28 04:36:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867316557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753333492] [2024-11-28 04:36:20,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:20,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:20,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:20,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:36:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:21,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:36:21,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2024-11-28 04:36:21,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:36:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753333492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:21,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:36:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:36:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072958790] [2024-11-28 04:36:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:21,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:36:21,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:21,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:36:21,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:36:21,823 INFO L87 Difference]: Start difference. First operand has 216 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 141 states have internal predecessors, (214), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-28 04:36:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:21,899 INFO L93 Difference]: Finished difference Result 424 states and 785 transitions. [2024-11-28 04:36:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:36:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) Word has length 456 [2024-11-28 04:36:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:21,915 INFO L225 Difference]: With dead ends: 424 [2024-11-28 04:36:21,915 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 04:36:21,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:36:21,929 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:21,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 04:36:22,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-11-28 04:36:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 136 states have (on average 1.4779411764705883) internal successors, (201), 136 states have internal predecessors, (201), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-28 04:36:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 347 transitions. [2024-11-28 04:36:22,055 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 347 transitions. Word has length 456 [2024-11-28 04:36:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:22,056 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 347 transitions. [2024-11-28 04:36:22,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-28 04:36:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 347 transitions. [2024-11-28 04:36:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-28 04:36:22,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:22,088 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:22,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:22,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:36:22,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:22,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash -336998400, now seen corresponding path program 1 times [2024-11-28 04:36:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:22,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630750320] [2024-11-28 04:36:22,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:22,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:36:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630750320] [2024-11-28 04:36:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630750320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:23,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215517618] [2024-11-28 04:36:23,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:23,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:23,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:23,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:23,202 INFO L87 Difference]: Start difference. First operand 211 states and 347 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:36:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:23,379 INFO L93 Difference]: Finished difference Result 552 states and 911 transitions. [2024-11-28 04:36:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 457 [2024-11-28 04:36:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:23,391 INFO L225 Difference]: With dead ends: 552 [2024-11-28 04:36:23,393 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 04:36:23,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:23,396 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 222 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:23,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 889 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 04:36:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2024-11-28 04:36:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 234 states have (on average 1.5128205128205128) internal successors, (354), 235 states have internal predecessors, (354), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 04:36:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 562 transitions. [2024-11-28 04:36:23,516 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 562 transitions. Word has length 457 [2024-11-28 04:36:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:23,520 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 562 transitions. [2024-11-28 04:36:23,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:36:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 562 transitions. [2024-11-28 04:36:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-28 04:36:23,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:23,540 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:23,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:36:23,540 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:23,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1234391678, now seen corresponding path program 1 times [2024-11-28 04:36:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:23,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208301492] [2024-11-28 04:36:23,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:36:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208301492] [2024-11-28 04:36:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208301492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:24,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:24,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308929054] [2024-11-28 04:36:24,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:24,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:24,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:24,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:24,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:24,640 INFO L87 Difference]: Start difference. First operand 341 states and 562 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:36:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:24,790 INFO L93 Difference]: Finished difference Result 871 states and 1443 transitions. [2024-11-28 04:36:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:24,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 457 [2024-11-28 04:36:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:24,803 INFO L225 Difference]: With dead ends: 871 [2024-11-28 04:36:24,804 INFO L226 Difference]: Without dead ends: 533 [2024-11-28 04:36:24,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:24,807 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 342 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:24,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 876 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-28 04:36:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 341. [2024-11-28 04:36:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 234 states have (on average 1.5042735042735043) internal successors, (352), 235 states have internal predecessors, (352), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 04:36:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 560 transitions. [2024-11-28 04:36:24,927 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 560 transitions. Word has length 457 [2024-11-28 04:36:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:24,933 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 560 transitions. [2024-11-28 04:36:24,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:36:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 560 transitions. [2024-11-28 04:36:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-28 04:36:24,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:24,948 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:24,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:36:24,949 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:24,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1875494489, now seen corresponding path program 1 times [2024-11-28 04:36:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478704319] [2024-11-28 04:36:24,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:36:27,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478704319] [2024-11-28 04:36:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478704319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479500938] [2024-11-28 04:36:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:27,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:27,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:27,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:27,494 INFO L87 Difference]: Start difference. First operand 341 states and 560 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:36:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:27,670 INFO L93 Difference]: Finished difference Result 731 states and 1185 transitions. [2024-11-28 04:36:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 458 [2024-11-28 04:36:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:27,676 INFO L225 Difference]: With dead ends: 731 [2024-11-28 04:36:27,678 INFO L226 Difference]: Without dead ends: 393 [2024-11-28 04:36:27,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:27,681 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 50 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:27,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 677 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-28 04:36:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 361. [2024-11-28 04:36:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 255 states have internal predecessors, (382), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 04:36:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 590 transitions. [2024-11-28 04:36:27,767 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 590 transitions. Word has length 458 [2024-11-28 04:36:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:27,769 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 590 transitions. [2024-11-28 04:36:27,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:36:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 590 transitions. [2024-11-28 04:36:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-28 04:36:27,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:27,783 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:27,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:36:27,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:27,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1873647447, now seen corresponding path program 1 times [2024-11-28 04:36:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:27,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380739461] [2024-11-28 04:36:27,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:27,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:36:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:30,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380739461] [2024-11-28 04:36:30,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380739461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:30,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:30,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:30,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192716257] [2024-11-28 04:36:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:30,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:30,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:30,167 INFO L87 Difference]: Start difference. First operand 361 states and 590 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-28 04:36:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:30,997 INFO L93 Difference]: Finished difference Result 1313 states and 2143 transitions. [2024-11-28 04:36:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:36:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 458 [2024-11-28 04:36:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:31,008 INFO L225 Difference]: With dead ends: 1313 [2024-11-28 04:36:31,010 INFO L226 Difference]: Without dead ends: 955 [2024-11-28 04:36:31,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:31,014 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 379 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:31,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1573 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:36:31,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-11-28 04:36:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 947. [2024-11-28 04:36:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 674 states have (on average 1.4985163204747773) internal successors, (1010), 678 states have internal predecessors, (1010), 266 states have call successors, (266), 6 states have call predecessors, (266), 6 states have return successors, (266), 262 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-28 04:36:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1542 transitions. [2024-11-28 04:36:31,230 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1542 transitions. Word has length 458 [2024-11-28 04:36:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:31,231 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1542 transitions. [2024-11-28 04:36:31,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-28 04:36:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1542 transitions. [2024-11-28 04:36:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-28 04:36:31,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:31,238 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:31,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:36:31,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:31,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1871547173, now seen corresponding path program 1 times [2024-11-28 04:36:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44056013] [2024-11-28 04:36:31,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:36:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44056013] [2024-11-28 04:36:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44056013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:39,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 04:36:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067595801] [2024-11-28 04:36:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:39,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:36:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:39,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:36:39,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:36:39,925 INFO L87 Difference]: Start difference. First operand 947 states and 1542 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 4 states have call predecessors, (73), 4 states have call successors, (73) [2024-11-28 04:36:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:54,293 INFO L93 Difference]: Finished difference Result 3762 states and 6032 transitions. [2024-11-28 04:36:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:36:54,294 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 4 states have call predecessors, (73), 4 states have call successors, (73) Word has length 459 [2024-11-28 04:36:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:54,317 INFO L225 Difference]: With dead ends: 3762 [2024-11-28 04:36:54,317 INFO L226 Difference]: Without dead ends: 2818 [2024-11-28 04:36:54,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:36:54,323 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 2229 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 1064 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 3588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1064 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:54,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 1942 Invalid, 3588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1064 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-28 04:36:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2024-11-28 04:36:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1256. [2024-11-28 04:36:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 885 states have (on average 1.4700564971751413) internal successors, (1301), 891 states have internal predecessors, (1301), 353 states have call successors, (353), 17 states have call predecessors, (353), 17 states have return successors, (353), 347 states have call predecessors, (353), 353 states have call successors, (353) [2024-11-28 04:36:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2007 transitions. [2024-11-28 04:36:54,763 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2007 transitions. Word has length 459 [2024-11-28 04:36:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:54,764 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 2007 transitions. [2024-11-28 04:36:54,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 4 states have call predecessors, (73), 4 states have call successors, (73) [2024-11-28 04:36:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2007 transitions. [2024-11-28 04:36:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-28 04:36:54,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:54,770 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:54,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:36:54,771 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:54,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2090401891, now seen corresponding path program 1 times [2024-11-28 04:36:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137008103] [2024-11-28 04:36:54,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:37:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137008103] [2024-11-28 04:37:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137008103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:01,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:01,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:37:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125275124] [2024-11-28 04:37:01,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:01,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:37:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:01,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:37:01,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:37:01,517 INFO L87 Difference]: Start difference. First operand 1256 states and 2007 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:04,163 INFO L93 Difference]: Finished difference Result 3793 states and 6009 transitions. [2024-11-28 04:37:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:37:04,164 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 459 [2024-11-28 04:37:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:04,181 INFO L225 Difference]: With dead ends: 3793 [2024-11-28 04:37:04,181 INFO L226 Difference]: Without dead ends: 2540 [2024-11-28 04:37:04,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:37:04,188 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 395 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:04,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 2207 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:37:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2024-11-28 04:37:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 1996. [2024-11-28 04:37:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1547 states have (on average 1.5029088558500323) internal successors, (2325), 1553 states have internal predecessors, (2325), 426 states have call successors, (426), 22 states have call predecessors, (426), 22 states have return successors, (426), 420 states have call predecessors, (426), 426 states have call successors, (426) [2024-11-28 04:37:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3177 transitions. [2024-11-28 04:37:04,712 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3177 transitions. Word has length 459 [2024-11-28 04:37:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:04,715 INFO L471 AbstractCegarLoop]: Abstraction has 1996 states and 3177 transitions. [2024-11-28 04:37:04,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3177 transitions. [2024-11-28 04:37:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-28 04:37:04,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:04,721 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:04,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:37:04,722 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:04,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1946399967, now seen corresponding path program 1 times [2024-11-28 04:37:04,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:04,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364843736] [2024-11-28 04:37:04,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:37:05,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:05,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364843736] [2024-11-28 04:37:05,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364843736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:05,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:05,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211486645] [2024-11-28 04:37:05,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:05,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:05,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:05,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:05,358 INFO L87 Difference]: Start difference. First operand 1996 states and 3177 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:06,053 INFO L93 Difference]: Finished difference Result 4518 states and 7201 transitions. [2024-11-28 04:37:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 459 [2024-11-28 04:37:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:06,080 INFO L225 Difference]: With dead ends: 4518 [2024-11-28 04:37:06,080 INFO L226 Difference]: Without dead ends: 3209 [2024-11-28 04:37:06,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:06,088 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 186 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:06,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 686 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2024-11-28 04:37:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3207. [2024-11-28 04:37:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2388 states have (on average 1.483249581239531) internal successors, (3542), 2400 states have internal predecessors, (3542), 779 states have call successors, (779), 39 states have call predecessors, (779), 39 states have return successors, (779), 767 states have call predecessors, (779), 779 states have call successors, (779) [2024-11-28 04:37:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5100 transitions. [2024-11-28 04:37:07,069 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5100 transitions. Word has length 459 [2024-11-28 04:37:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:07,072 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 5100 transitions. [2024-11-28 04:37:07,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5100 transitions. [2024-11-28 04:37:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:07,079 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:07,079 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:07,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:37:07,080 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:07,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1615009540, now seen corresponding path program 1 times [2024-11-28 04:37:07,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:07,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641587891] [2024-11-28 04:37:07,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 3 proven. 213 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:37:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641587891] [2024-11-28 04:37:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641587891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722666169] [2024-11-28 04:37:08,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:08,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:08,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:37:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:08,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:37:08,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 3768 proven. 48 refuted. 0 times theorem prover too weak. 6696 trivial. 0 not checked. [2024-11-28 04:37:08,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 168 proven. 48 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:37:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722666169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:10,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:10,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 04:37:10,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848989451] [2024-11-28 04:37:10,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:10,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:37:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:10,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:37:10,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:37:10,233 INFO L87 Difference]: Start difference. First operand 3207 states and 5100 transitions. Second operand has 15 states, 15 states have (on average 15.266666666666667) internal successors, (229), 15 states have internal predecessors, (229), 4 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (162), 4 states have call predecessors, (162), 4 states have call successors, (162) [2024-11-28 04:37:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:14,696 INFO L93 Difference]: Finished difference Result 10075 states and 15517 transitions. [2024-11-28 04:37:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:37:14,697 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.266666666666667) internal successors, (229), 15 states have internal predecessors, (229), 4 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (162), 4 states have call predecessors, (162), 4 states have call successors, (162) Word has length 460 [2024-11-28 04:37:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:14,746 INFO L225 Difference]: With dead ends: 10075 [2024-11-28 04:37:14,746 INFO L226 Difference]: Without dead ends: 7189 [2024-11-28 04:37:14,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=464, Invalid=1606, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:37:14,761 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 1450 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 1114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:14,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 1400 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1114 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:37:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7189 states. [2024-11-28 04:37:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7189 to 2943. [2024-11-28 04:37:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2287 states have (on average 1.4914735461303017) internal successors, (3411), 2295 states have internal predecessors, (3411), 605 states have call successors, (605), 50 states have call predecessors, (605), 50 states have return successors, (605), 597 states have call predecessors, (605), 605 states have call successors, (605) [2024-11-28 04:37:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 4621 transitions. [2024-11-28 04:37:15,916 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 4621 transitions. Word has length 460 [2024-11-28 04:37:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:15,918 INFO L471 AbstractCegarLoop]: Abstraction has 2943 states and 4621 transitions. [2024-11-28 04:37:15,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.266666666666667) internal successors, (229), 15 states have internal predecessors, (229), 4 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (162), 4 states have call predecessors, (162), 4 states have call successors, (162) [2024-11-28 04:37:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 4621 transitions. [2024-11-28 04:37:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:15,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:15,924 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:15,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:37:16,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:37:16,125 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:16,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1267039166, now seen corresponding path program 1 times [2024-11-28 04:37:16,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:16,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353648080] [2024-11-28 04:37:16,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:37:16,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:16,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353648080] [2024-11-28 04:37:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353648080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:16,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:16,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:16,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598840332] [2024-11-28 04:37:16,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:16,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:16,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:16,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:16,324 INFO L87 Difference]: Start difference. First operand 2943 states and 4621 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:17,617 INFO L93 Difference]: Finished difference Result 6692 states and 10524 transitions. [2024-11-28 04:37:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 460 [2024-11-28 04:37:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:17,643 INFO L225 Difference]: With dead ends: 6692 [2024-11-28 04:37:17,643 INFO L226 Difference]: Without dead ends: 5648 [2024-11-28 04:37:17,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:17,648 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 332 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:17,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 691 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5648 states. [2024-11-28 04:37:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5648 to 5646. [2024-11-28 04:37:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 4414 states have (on average 1.4916175804259175) internal successors, (6584), 4430 states have internal predecessors, (6584), 1137 states have call successors, (1137), 94 states have call predecessors, (1137), 94 states have return successors, (1137), 1121 states have call predecessors, (1137), 1137 states have call successors, (1137) [2024-11-28 04:37:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 8858 transitions. [2024-11-28 04:37:19,115 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 8858 transitions. Word has length 460 [2024-11-28 04:37:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:19,117 INFO L471 AbstractCegarLoop]: Abstraction has 5646 states and 8858 transitions. [2024-11-28 04:37:19,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 8858 transitions. [2024-11-28 04:37:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:19,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:19,130 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:19,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:37:19,130 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:19,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1818179690, now seen corresponding path program 1 times [2024-11-28 04:37:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:19,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406372259] [2024-11-28 04:37:19,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:37:19,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:19,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406372259] [2024-11-28 04:37:19,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406372259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:19,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:19,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:19,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186651747] [2024-11-28 04:37:19,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:19,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:19,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:19,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:19,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:19,512 INFO L87 Difference]: Start difference. First operand 5646 states and 8858 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:21,071 INFO L93 Difference]: Finished difference Result 12100 states and 19012 transitions. [2024-11-28 04:37:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 460 [2024-11-28 04:37:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:21,118 INFO L225 Difference]: With dead ends: 12100 [2024-11-28 04:37:21,119 INFO L226 Difference]: Without dead ends: 7634 [2024-11-28 04:37:21,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:21,136 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 335 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:21,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 690 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7634 states. [2024-11-28 04:37:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7634 to 7632. [2024-11-28 04:37:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 5824 states have (on average 1.4800824175824177) internal successors, (8620), 5848 states have internal predecessors, (8620), 1669 states have call successors, (1669), 138 states have call predecessors, (1669), 138 states have return successors, (1669), 1645 states have call predecessors, (1669), 1669 states have call successors, (1669) [2024-11-28 04:37:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11958 transitions. [2024-11-28 04:37:23,357 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11958 transitions. Word has length 460 [2024-11-28 04:37:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:23,358 INFO L471 AbstractCegarLoop]: Abstraction has 7632 states and 11958 transitions. [2024-11-28 04:37:23,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11958 transitions. [2024-11-28 04:37:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:23,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:23,368 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:23,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:37:23,368 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:23,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1725331527, now seen corresponding path program 1 times [2024-11-28 04:37:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67580783] [2024-11-28 04:37:23,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:37:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67580783] [2024-11-28 04:37:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67580783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:27,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580614335] [2024-11-28 04:37:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:27,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:27,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:27,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:27,856 INFO L87 Difference]: Start difference. First operand 7632 states and 11958 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:31,669 INFO L93 Difference]: Finished difference Result 16140 states and 25239 transitions. [2024-11-28 04:37:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:37:31,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 460 [2024-11-28 04:37:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:31,722 INFO L225 Difference]: With dead ends: 16140 [2024-11-28 04:37:31,723 INFO L226 Difference]: Without dead ends: 9560 [2024-11-28 04:37:31,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:37:31,745 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 465 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:31,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1054 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:37:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2024-11-28 04:37:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 7632. [2024-11-28 04:37:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 5824 states have (on average 1.4800824175824177) internal successors, (8620), 5848 states have internal predecessors, (8620), 1669 states have call successors, (1669), 138 states have call predecessors, (1669), 138 states have return successors, (1669), 1645 states have call predecessors, (1669), 1669 states have call successors, (1669) [2024-11-28 04:37:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11958 transitions. [2024-11-28 04:37:34,254 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11958 transitions. Word has length 460 [2024-11-28 04:37:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:34,255 INFO L471 AbstractCegarLoop]: Abstraction has 7632 states and 11958 transitions. [2024-11-28 04:37:34,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11958 transitions. [2024-11-28 04:37:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:34,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:34,298 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:34,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:37:34,298 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:34,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1954966377, now seen corresponding path program 1 times [2024-11-28 04:37:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656008158] [2024-11-28 04:37:34,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:37:34,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656008158] [2024-11-28 04:37:34,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656008158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:34,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:34,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:37:34,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644762207] [2024-11-28 04:37:34,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:34,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:37:34,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:34,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:37:34,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:37:34,786 INFO L87 Difference]: Start difference. First operand 7632 states and 11958 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:37,884 INFO L93 Difference]: Finished difference Result 13978 states and 21908 transitions. [2024-11-28 04:37:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:37:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 460 [2024-11-28 04:37:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:37,941 INFO L225 Difference]: With dead ends: 13978 [2024-11-28 04:37:37,941 INFO L226 Difference]: Without dead ends: 9716 [2024-11-28 04:37:37,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:37,959 INFO L435 NwaCegarLoop]: 656 mSDtfsCounter, 350 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:37,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1483 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:37:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9716 states. [2024-11-28 04:37:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9666. [2024-11-28 04:37:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9666 states, 7282 states have (on average 1.4715737434770668) internal successors, (10716), 7314 states have internal predecessors, (10716), 2201 states have call successors, (2201), 182 states have call predecessors, (2201), 182 states have return successors, (2201), 2169 states have call predecessors, (2201), 2201 states have call successors, (2201) [2024-11-28 04:37:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9666 states to 9666 states and 15118 transitions. [2024-11-28 04:37:40,996 INFO L78 Accepts]: Start accepts. Automaton has 9666 states and 15118 transitions. Word has length 460 [2024-11-28 04:37:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:40,997 INFO L471 AbstractCegarLoop]: Abstraction has 9666 states and 15118 transitions. [2024-11-28 04:37:40,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:37:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9666 states and 15118 transitions. [2024-11-28 04:37:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:41,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:41,003 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:41,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:37:41,004 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:41,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1274908007, now seen corresponding path program 1 times [2024-11-28 04:37:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:41,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810389172] [2024-11-28 04:37:41,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 114 proven. 102 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:37:41,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:41,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810389172] [2024-11-28 04:37:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810389172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:41,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029775212] [2024-11-28 04:37:41,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:41,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:41,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:41,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:41,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:37:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:41,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:37:41,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5316 proven. 102 refuted. 0 times theorem prover too weak. 5094 trivial. 0 not checked. [2024-11-28 04:37:42,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 114 proven. 102 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:37:43,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029775212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:43,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:43,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 04:37:43,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636592624] [2024-11-28 04:37:43,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:43,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:37:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:43,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:37:43,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:37:43,119 INFO L87 Difference]: Start difference. First operand 9666 states and 15118 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2024-11-28 04:37:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:46,034 INFO L93 Difference]: Finished difference Result 19320 states and 29942 transitions. [2024-11-28 04:37:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:37:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 460 [2024-11-28 04:37:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:46,100 INFO L225 Difference]: With dead ends: 19320 [2024-11-28 04:37:46,100 INFO L226 Difference]: Without dead ends: 10032 [2024-11-28 04:37:46,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 917 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:37:46,128 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 347 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:46,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 650 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:37:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2024-11-28 04:37:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 9734. [2024-11-28 04:37:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 7333 states have (on average 1.450565934815219) internal successors, (10637), 7365 states have internal predecessors, (10637), 2201 states have call successors, (2201), 199 states have call predecessors, (2201), 199 states have return successors, (2201), 2169 states have call predecessors, (2201), 2201 states have call successors, (2201) [2024-11-28 04:37:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 15039 transitions. [2024-11-28 04:37:48,752 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 15039 transitions. Word has length 460 [2024-11-28 04:37:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:48,753 INFO L471 AbstractCegarLoop]: Abstraction has 9734 states and 15039 transitions. [2024-11-28 04:37:48,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2024-11-28 04:37:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 15039 transitions. [2024-11-28 04:37:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 04:37:48,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:48,760 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:48,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:37:48,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:48,961 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:48,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1252275753, now seen corresponding path program 1 times [2024-11-28 04:37:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:48,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229868341] [2024-11-28 04:37:48,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:48,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 81 proven. 135 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:37:50,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:50,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229868341] [2024-11-28 04:37:50,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229868341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:50,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171295256] [2024-11-28 04:37:50,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:50,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:50,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:50,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:50,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:37:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:51,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:37:51,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5196 proven. 90 refuted. 0 times theorem prover too weak. 5226 trivial. 0 not checked. [2024-11-28 04:37:51,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 126 proven. 90 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:37:52,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171295256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:52,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-28 04:37:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042349479] [2024-11-28 04:37:52,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:52,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:37:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:52,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:37:52,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:37:52,438 INFO L87 Difference]: Start difference. First operand 9734 states and 15039 transitions. Second operand has 15 states, 14 states have (on average 11.5) internal successors, (161), 15 states have internal predecessors, (161), 4 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 4 states have call successors, (150) [2024-11-28 04:37:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:58,949 INFO L93 Difference]: Finished difference Result 18538 states and 28225 transitions. [2024-11-28 04:37:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 04:37:58,949 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.5) internal successors, (161), 15 states have internal predecessors, (161), 4 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 4 states have call successors, (150) Word has length 460 [2024-11-28 04:37:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:59,000 INFO L225 Difference]: With dead ends: 18538 [2024-11-28 04:37:59,000 INFO L226 Difference]: Without dead ends: 9023 [2024-11-28 04:37:59,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 918 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=747, Invalid=2115, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:37:59,021 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 2118 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:59,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 1943 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:37:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9023 states. [2024-11-28 04:38:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9023 to 8625. [2024-11-28 04:38:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8625 states, 6338 states have (on average 1.4031240138845062) internal successors, (8893), 6362 states have internal predecessors, (8893), 2033 states have call successors, (2033), 253 states have call predecessors, (2033), 253 states have return successors, (2033), 2009 states have call predecessors, (2033), 2033 states have call successors, (2033) [2024-11-28 04:38:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8625 states to 8625 states and 12959 transitions. [2024-11-28 04:38:01,981 INFO L78 Accepts]: Start accepts. Automaton has 8625 states and 12959 transitions. Word has length 460 [2024-11-28 04:38:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:01,982 INFO L471 AbstractCegarLoop]: Abstraction has 8625 states and 12959 transitions. [2024-11-28 04:38:01,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.5) internal successors, (161), 15 states have internal predecessors, (161), 4 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 4 states have call successors, (150) [2024-11-28 04:38:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8625 states and 12959 transitions. [2024-11-28 04:38:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-28 04:38:01,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:01,985 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:01,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:38:02,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:38:02,186 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:02,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash 200288793, now seen corresponding path program 1 times [2024-11-28 04:38:02,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:02,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969883661] [2024-11-28 04:38:02,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:02,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:38:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:04,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969883661] [2024-11-28 04:38:04,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969883661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:04,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:04,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:38:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642194893] [2024-11-28 04:38:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:04,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:38:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:04,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:38:04,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:38:04,649 INFO L87 Difference]: Start difference. First operand 8625 states and 12959 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 2 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-28 04:38:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:36,291 INFO L93 Difference]: Finished difference Result 73975 states and 112070 transitions. [2024-11-28 04:38:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:38:36,292 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 2 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 461 [2024-11-28 04:38:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:36,750 INFO L225 Difference]: With dead ends: 73975 [2024-11-28 04:38:36,750 INFO L226 Difference]: Without dead ends: 70525 [2024-11-28 04:38:36,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:38:36,782 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 3242 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 1503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1503 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:36,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3242 Valid, 3555 Invalid, 4140 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1503 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-28 04:38:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70525 states. [2024-11-28 04:38:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70525 to 20221. [2024-11-28 04:38:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20221 states, 14890 states have (on average 1.4049697783747481) internal successors, (20920), 14954 states have internal predecessors, (20920), 4737 states have call successors, (4737), 593 states have call predecessors, (4737), 593 states have return successors, (4737), 4673 states have call predecessors, (4737), 4737 states have call successors, (4737) [2024-11-28 04:38:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20221 states to 20221 states and 30394 transitions. [2024-11-28 04:38:45,170 INFO L78 Accepts]: Start accepts. Automaton has 20221 states and 30394 transitions. Word has length 461 [2024-11-28 04:38:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:45,171 INFO L471 AbstractCegarLoop]: Abstraction has 20221 states and 30394 transitions. [2024-11-28 04:38:45,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 2 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-28 04:38:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 20221 states and 30394 transitions. [2024-11-28 04:38:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-28 04:38:45,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:45,178 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:45,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:38:45,178 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:45,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash -388324891, now seen corresponding path program 1 times [2024-11-28 04:38:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070861949] [2024-11-28 04:38:45,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 24 proven. 192 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:38:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070861949] [2024-11-28 04:38:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070861949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960570174] [2024-11-28 04:38:47,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:47,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:47,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:47,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:47,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:38:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:47,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:38:47,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 2220 proven. 921 refuted. 0 times theorem prover too weak. 7371 trivial. 0 not checked. [2024-11-28 04:38:58,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:22,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960570174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:22,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:39:22,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19] total 28 [2024-11-28 04:39:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273451534] [2024-11-28 04:39:22,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:22,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:39:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:22,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:39:22,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1236, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:39:22,794 INFO L87 Difference]: Start difference. First operand 20221 states and 30394 transitions. Second operand has 28 states, 28 states have (on average 7.642857142857143) internal successors, (214), 26 states have internal predecessors, (214), 8 states have call successors, (146), 7 states have call predecessors, (146), 10 states have return successors, (146), 8 states have call predecessors, (146), 8 states have call successors, (146) [2024-11-28 04:39:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:48,248 INFO L93 Difference]: Finished difference Result 51985 states and 75923 transitions. [2024-11-28 04:39:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-28 04:39:48,249 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.642857142857143) internal successors, (214), 26 states have internal predecessors, (214), 8 states have call successors, (146), 7 states have call predecessors, (146), 10 states have return successors, (146), 8 states have call predecessors, (146), 8 states have call successors, (146) Word has length 461 [2024-11-28 04:39:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:48,386 INFO L225 Difference]: With dead ends: 51985 [2024-11-28 04:39:48,386 INFO L226 Difference]: Without dead ends: 38091 [2024-11-28 04:39:48,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4787 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=3170, Invalid=11836, Unknown=0, NotChecked=0, Total=15006 [2024-11-28 04:39:48,436 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 2046 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 4284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:48,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 4016 Invalid, 4284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:39:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38091 states. [2024-11-28 04:40:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38091 to 35775. [2024-11-28 04:40:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35775 states, 25831 states have (on average 1.3714141922496226) internal successors, (35425), 25991 states have internal predecessors, (35425), 8523 states have call successors, (8523), 1420 states have call predecessors, (8523), 1420 states have return successors, (8523), 8363 states have call predecessors, (8523), 8523 states have call successors, (8523) [2024-11-28 04:40:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35775 states to 35775 states and 52471 transitions. [2024-11-28 04:40:02,699 INFO L78 Accepts]: Start accepts. Automaton has 35775 states and 52471 transitions. Word has length 461 [2024-11-28 04:40:02,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:02,700 INFO L471 AbstractCegarLoop]: Abstraction has 35775 states and 52471 transitions. [2024-11-28 04:40:02,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.642857142857143) internal successors, (214), 26 states have internal predecessors, (214), 8 states have call successors, (146), 7 states have call predecessors, (146), 10 states have return successors, (146), 8 states have call predecessors, (146), 8 states have call successors, (146) [2024-11-28 04:40:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 35775 states and 52471 transitions. [2024-11-28 04:40:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-28 04:40:02,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:02,708 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:02,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:40:02,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:40:02,908 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:02,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:02,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1196214099, now seen corresponding path program 1 times [2024-11-28 04:40:02,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:02,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212680296] [2024-11-28 04:40:02,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:02,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 9 proven. 207 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:40:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212680296] [2024-11-28 04:40:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212680296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473112297] [2024-11-28 04:40:03,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:03,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:03,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:03,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:40:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:03,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:40:03,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 906 proven. 207 refuted. 0 times theorem prover too weak. 9399 trivial. 0 not checked. [2024-11-28 04:40:05,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 9 proven. 207 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:40:06,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473112297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:06,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:06,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 04:40:06,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257147011] [2024-11-28 04:40:06,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:06,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:40:06,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:06,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:40:06,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:40:06,459 INFO L87 Difference]: Start difference. First operand 35775 states and 52471 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2024-11-28 04:40:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:12,648 INFO L93 Difference]: Finished difference Result 47391 states and 68289 transitions. [2024-11-28 04:40:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:40:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 461 [2024-11-28 04:40:12,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:12,722 INFO L225 Difference]: With dead ends: 47391 [2024-11-28 04:40:12,722 INFO L226 Difference]: Without dead ends: 13433 [2024-11-28 04:40:12,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 919 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:40:12,782 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 111 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:12,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 618 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:40:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13433 states. [2024-11-28 04:40:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13433 to 12531. [2024-11-28 04:40:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12531 states, 9242 states have (on average 1.332179181995239) internal successors, (12312), 9298 states have internal predecessors, (12312), 2597 states have call successors, (2597), 691 states have call predecessors, (2597), 691 states have return successors, (2597), 2541 states have call predecessors, (2597), 2597 states have call successors, (2597) [2024-11-28 04:40:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 17506 transitions. [2024-11-28 04:40:17,824 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 17506 transitions. Word has length 461 [2024-11-28 04:40:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:17,826 INFO L471 AbstractCegarLoop]: Abstraction has 12531 states and 17506 transitions. [2024-11-28 04:40:17,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2024-11-28 04:40:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 17506 transitions. [2024-11-28 04:40:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-28 04:40:17,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:17,832 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:17,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:40:18,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:40:18,034 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:18,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash 969242272, now seen corresponding path program 1 times [2024-11-28 04:40:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:18,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213467487] [2024-11-28 04:40:18,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 177 proven. 249 refuted. 0 times theorem prover too weak. 10086 trivial. 0 not checked. [2024-11-28 04:40:23,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213467487] [2024-11-28 04:40:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213467487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:23,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94560097] [2024-11-28 04:40:23,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:23,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:23,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:23,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:23,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:40:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:24,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:40:24,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5761 proven. 480 refuted. 0 times theorem prover too weak. 4271 trivial. 0 not checked. [2024-11-28 04:40:29,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94560097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:33,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:40:33,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2024-11-28 04:40:33,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354124069] [2024-11-28 04:40:33,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:33,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:40:33,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:33,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:40:33,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1273, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:40:33,465 INFO L87 Difference]: Start difference. First operand 12531 states and 17506 transitions. Second operand has 31 states, 30 states have (on average 6.533333333333333) internal successors, (196), 29 states have internal predecessors, (196), 9 states have call successors, (146), 6 states have call predecessors, (146), 9 states have return successors, (146), 8 states have call predecessors, (146), 9 states have call successors, (146) [2024-11-28 04:40:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:52,841 INFO L93 Difference]: Finished difference Result 29233 states and 40340 transitions. [2024-11-28 04:40:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 04:40:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 6.533333333333333) internal successors, (196), 29 states have internal predecessors, (196), 9 states have call successors, (146), 6 states have call predecessors, (146), 9 states have return successors, (146), 8 states have call predecessors, (146), 9 states have call successors, (146) Word has length 462 [2024-11-28 04:40:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:52,895 INFO L225 Difference]: With dead ends: 29233 [2024-11-28 04:40:52,895 INFO L226 Difference]: Without dead ends: 17048 [2024-11-28 04:40:52,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1117, Invalid=5363, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 04:40:52,916 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 2966 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 1374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1374 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:52,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 2906 Invalid, 5671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1374 Valid, 4297 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-28 04:40:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17048 states. [2024-11-28 04:40:56,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17048 to 5638. [2024-11-28 04:40:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 4203 states have (on average 1.3480847014037591) internal successors, (5666), 4222 states have internal predecessors, (5666), 1125 states have call successors, (1125), 309 states have call predecessors, (1125), 309 states have return successors, (1125), 1106 states have call predecessors, (1125), 1125 states have call successors, (1125) [2024-11-28 04:40:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 7916 transitions. [2024-11-28 04:40:56,110 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 7916 transitions. Word has length 462 [2024-11-28 04:40:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:56,111 INFO L471 AbstractCegarLoop]: Abstraction has 5638 states and 7916 transitions. [2024-11-28 04:40:56,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 6.533333333333333) internal successors, (196), 29 states have internal predecessors, (196), 9 states have call successors, (146), 6 states have call predecessors, (146), 9 states have return successors, (146), 8 states have call predecessors, (146), 9 states have call successors, (146) [2024-11-28 04:40:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 7916 transitions. [2024-11-28 04:40:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-28 04:40:56,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:56,114 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:56,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:40:56,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:56,315 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:56,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1717930592, now seen corresponding path program 1 times [2024-11-28 04:40:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355508289] [2024-11-28 04:40:56,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 120 proven. 96 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:40:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355508289] [2024-11-28 04:40:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355508289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316199932] [2024-11-28 04:40:57,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:57,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:57,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:57,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:57,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:40:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:57,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:40:57,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5196 proven. 90 refuted. 0 times theorem prover too weak. 5226 trivial. 0 not checked. [2024-11-28 04:40:58,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 126 proven. 90 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:40:59,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316199932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:59,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:59,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 11 [2024-11-28 04:40:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748094829] [2024-11-28 04:40:59,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:59,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:40:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:59,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:40:59,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:40:59,036 INFO L87 Difference]: Start difference. First operand 5638 states and 7916 transitions. Second operand has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) [2024-11-28 04:41:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:04,453 INFO L93 Difference]: Finished difference Result 11398 states and 15831 transitions. [2024-11-28 04:41:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:41:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) Word has length 462 [2024-11-28 04:41:04,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:04,481 INFO L225 Difference]: With dead ends: 11398 [2024-11-28 04:41:04,481 INFO L226 Difference]: Without dead ends: 6024 [2024-11-28 04:41:04,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 922 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:41:04,491 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 1057 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:04,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1198 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:41:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2024-11-28 04:41:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 4763. [2024-11-28 04:41:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 3514 states have (on average 1.331815594763802) internal successors, (4680), 3527 states have internal predecessors, (4680), 973 states have call successors, (973), 275 states have call predecessors, (973), 275 states have return successors, (973), 960 states have call predecessors, (973), 973 states have call successors, (973) [2024-11-28 04:41:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6626 transitions. [2024-11-28 04:41:06,871 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6626 transitions. Word has length 462 [2024-11-28 04:41:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:06,872 INFO L471 AbstractCegarLoop]: Abstraction has 4763 states and 6626 transitions. [2024-11-28 04:41:06,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) [2024-11-28 04:41:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6626 transitions. [2024-11-28 04:41:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-28 04:41:06,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:06,875 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:06,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:41:07,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:07,076 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:07,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1294283870, now seen corresponding path program 1 times [2024-11-28 04:41:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981836212] [2024-11-28 04:41:07,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:41:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361354998] [2024-11-28 04:41:07,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:07,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:07,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:07,491 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:07,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:41:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:08,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:41:08,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4018 proven. 159 refuted. 0 times theorem prover too weak. 6335 trivial. 0 not checked. [2024-11-28 04:41:12,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:29,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981836212] [2024-11-28 04:41:29,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:41:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361354998] [2024-11-28 04:41:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361354998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:29,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:41:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-28 04:41:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429150671] [2024-11-28 04:41:29,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:29,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:41:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:29,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:41:29,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=437, Unknown=2, NotChecked=0, Total=650 [2024-11-28 04:41:29,753 INFO L87 Difference]: Start difference. First operand 4763 states and 6626 transitions. Second operand has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (73), 7 states have call predecessors, (73), 10 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2024-11-28 04:41:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:38,559 INFO L93 Difference]: Finished difference Result 12840 states and 17339 transitions. [2024-11-28 04:41:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:41:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (73), 7 states have call predecessors, (73), 10 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 462 [2024-11-28 04:41:38,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:38,595 INFO L225 Difference]: With dead ends: 12840 [2024-11-28 04:41:38,595 INFO L226 Difference]: Without dead ends: 8673 [2024-11-28 04:41:38,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=287, Invalid=581, Unknown=2, NotChecked=0, Total=870 [2024-11-28 04:41:38,605 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 692 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:38,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1610 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:41:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2024-11-28 04:41:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 7148. [2024-11-28 04:41:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7148 states, 5204 states have (on average 1.2995772482705612) internal successors, (6763), 5225 states have internal predecessors, (6763), 1483 states have call successors, (1483), 460 states have call predecessors, (1483), 460 states have return successors, (1483), 1462 states have call predecessors, (1483), 1483 states have call successors, (1483) [2024-11-28 04:41:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 9729 transitions. [2024-11-28 04:41:42,421 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 9729 transitions. Word has length 462 [2024-11-28 04:41:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:42,422 INFO L471 AbstractCegarLoop]: Abstraction has 7148 states and 9729 transitions. [2024-11-28 04:41:42,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (73), 7 states have call predecessors, (73), 10 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2024-11-28 04:41:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 9729 transitions. [2024-11-28 04:41:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-28 04:41:42,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:42,425 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:42,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:41:42,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:41:42,626 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:42,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1822258992, now seen corresponding path program 1 times [2024-11-28 04:41:42,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:42,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995330133] [2024-11-28 04:41:42,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:41:46,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:46,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995330133] [2024-11-28 04:41:46,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995330133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:46,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:41:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820582415] [2024-11-28 04:41:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:46,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:41:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:46,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:41:46,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:41:46,721 INFO L87 Difference]: Start difference. First operand 7148 states and 9729 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:42:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:25,795 INFO L93 Difference]: Finished difference Result 32853 states and 44569 transitions. [2024-11-28 04:42:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:42:25,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 462 [2024-11-28 04:42:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:25,877 INFO L225 Difference]: With dead ends: 32853 [2024-11-28 04:42:25,878 INFO L226 Difference]: Without dead ends: 28305 [2024-11-28 04:42:25,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:42:25,893 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 1745 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:25,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 3285 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2024-11-28 04:42:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28305 states. [2024-11-28 04:42:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28305 to 7196. [2024-11-28 04:42:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7196 states, 5252 states have (on average 1.3025514089870525) internal successors, (6841), 5273 states have internal predecessors, (6841), 1483 states have call successors, (1483), 460 states have call predecessors, (1483), 460 states have return successors, (1483), 1462 states have call predecessors, (1483), 1483 states have call successors, (1483) [2024-11-28 04:42:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 9807 transitions. [2024-11-28 04:42:30,787 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 9807 transitions. Word has length 462 [2024-11-28 04:42:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:30,788 INFO L471 AbstractCegarLoop]: Abstraction has 7196 states and 9807 transitions. [2024-11-28 04:42:30,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:42:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 9807 transitions. [2024-11-28 04:42:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-11-28 04:42:30,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:30,791 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:30,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:42:30,791 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:30,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:30,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1656212248, now seen corresponding path program 1 times [2024-11-28 04:42:30,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:30,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66120858] [2024-11-28 04:42:30,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:30,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:42:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61545605] [2024-11-28 04:42:31,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:31,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:31,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:31,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:31,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:42:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:31,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:42:31,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4018 proven. 159 refuted. 0 times theorem prover too weak. 6335 trivial. 0 not checked. [2024-11-28 04:42:39,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:34,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:34,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66120858] [2024-11-28 04:43:34,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:43:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61545605] [2024-11-28 04:43:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61545605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:34,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:34,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-28 04:43:34,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103462857] [2024-11-28 04:43:34,734 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:34,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:43:34,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:34,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:43:34,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=792, Unknown=6, NotChecked=0, Total=1056 [2024-11-28 04:43:34,736 INFO L87 Difference]: Start difference. First operand 7196 states and 9807 transitions. Second operand has 23 states, 23 states have (on average 5.565217391304348) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (73), 7 states have call predecessors, (73), 10 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2024-11-28 04:43:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:50,908 INFO L93 Difference]: Finished difference Result 19651 states and 26395 transitions. [2024-11-28 04:43:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:43:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.565217391304348) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (73), 7 states have call predecessors, (73), 10 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 463 [2024-11-28 04:43:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:50,956 INFO L225 Difference]: With dead ends: 19651 [2024-11-28 04:43:50,956 INFO L226 Difference]: Without dead ends: 15062 [2024-11-28 04:43:50,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=519, Invalid=1281, Unknown=6, NotChecked=0, Total=1806 [2024-11-28 04:43:50,968 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 1220 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:50,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1880 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-28 04:43:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15062 states. [2024-11-28 04:43:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15062 to 13447. [2024-11-28 04:43:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13447 states, 9793 states have (on average 1.2944960686204432) internal successors, (12677), 9832 states have internal predecessors, (12677), 2773 states have call successors, (2773), 880 states have call predecessors, (2773), 880 states have return successors, (2773), 2734 states have call predecessors, (2773), 2773 states have call successors, (2773) [2024-11-28 04:43:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13447 states to 13447 states and 18223 transitions. [2024-11-28 04:43:58,209 INFO L78 Accepts]: Start accepts. Automaton has 13447 states and 18223 transitions. Word has length 463 [2024-11-28 04:43:58,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:58,210 INFO L471 AbstractCegarLoop]: Abstraction has 13447 states and 18223 transitions. [2024-11-28 04:43:58,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.565217391304348) internal successors, (128), 20 states have internal predecessors, (128), 7 states have call successors, (73), 7 states have call predecessors, (73), 10 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2024-11-28 04:43:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 13447 states and 18223 transitions. [2024-11-28 04:43:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-11-28 04:43:58,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:58,213 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:58,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:43:58,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:43:58,414 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:58,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2104686185, now seen corresponding path program 1 times [2024-11-28 04:43:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:58,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218547357] [2024-11-28 04:43:58,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-28 04:43:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218547357] [2024-11-28 04:43:59,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218547357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:59,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:43:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784929676] [2024-11-28 04:43:59,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:59,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:59,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:59,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:43:59,018 INFO L87 Difference]: Start difference. First operand 13447 states and 18223 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:44:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:26,503 INFO L93 Difference]: Finished difference Result 56441 states and 74793 transitions. [2024-11-28 04:44:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:44:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 463 [2024-11-28 04:44:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:26,612 INFO L225 Difference]: With dead ends: 56441 [2024-11-28 04:44:26,612 INFO L226 Difference]: Without dead ends: 44036 [2024-11-28 04:44:26,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:44:26,637 INFO L435 NwaCegarLoop]: 610 mSDtfsCounter, 640 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:26,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1344 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:44:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44036 states. [2024-11-28 04:44:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44036 to 32088. [2024-11-28 04:44:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32088 states, 23541 states have (on average 1.2875833651926427) internal successors, (30311), 23655 states have internal predecessors, (30311), 6457 states have call successors, (6457), 2089 states have call predecessors, (6457), 2089 states have return successors, (6457), 6343 states have call predecessors, (6457), 6457 states have call successors, (6457) [2024-11-28 04:44:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32088 states to 32088 states and 43225 transitions. [2024-11-28 04:44:44,598 INFO L78 Accepts]: Start accepts. Automaton has 32088 states and 43225 transitions. Word has length 463 [2024-11-28 04:44:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:44,598 INFO L471 AbstractCegarLoop]: Abstraction has 32088 states and 43225 transitions. [2024-11-28 04:44:44,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-28 04:44:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 32088 states and 43225 transitions. [2024-11-28 04:44:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-11-28 04:44:44,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:44,607 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:44,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:44:44,607 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:44,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1767579285, now seen corresponding path program 1 times [2024-11-28 04:44:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660224176] [2024-11-28 04:44:44,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 132 proven. 84 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:44:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660224176] [2024-11-28 04:44:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660224176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255287112] [2024-11-28 04:44:45,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:45,136 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:45,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e8e2a-b4d7-40fc-8e75-361fe1f3d7aa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:44:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:45,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:44:45,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5088 proven. 84 refuted. 0 times theorem prover too weak. 5340 trivial. 0 not checked. [2024-11-28 04:44:47,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 132 proven. 84 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-28 04:44:48,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255287112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:48,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:48,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 04:44:48,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593051135] [2024-11-28 04:44:48,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:48,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:44:48,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:48,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:44:48,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:44:48,554 INFO L87 Difference]: Start difference. First operand 32088 states and 43225 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102)