./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC --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 ea9feee752dca5e5614c423318b7c590a6ae07e20bba2cfd8d20956282c64c55 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:05:36,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:05:36,647 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:05:36,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:05:36,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:05:36,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:05:36,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:05:36,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:05:36,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:05:36,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:05:36,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:05:36,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:05:36,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:05:36,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:05:36,688 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:05:36,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:05:36,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:05:36,689 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:05:36,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:05:36,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:05:36,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:05:36,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:05:36,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:05:36,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:05:36,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:05:36,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:05:36,691 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:05:36,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:05:36,691 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:05:36,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:05:36,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:05:36,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:05:36,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:05:36,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:05:36,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:05:36,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:05:36,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:05:36,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:05:36,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:05:36,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:05:36,694 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_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC 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 -> ea9feee752dca5e5614c423318b7c590a6ae07e20bba2cfd8d20956282c64c55 [2024-11-23 23:05:37,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:05:37,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:05:37,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:05:37,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:05:37,072 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:05:37,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i [2024-11-23 23:05:40,743 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/data/73f8e6cd6/609f187a6d114ae9ac48dcd5db889014/FLAG4db27c050 [2024-11-23 23:05:41,248 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:05:41,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i [2024-11-23 23:05:41,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/data/73f8e6cd6/609f187a6d114ae9ac48dcd5db889014/FLAG4db27c050 [2024-11-23 23:05:41,325 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/data/73f8e6cd6/609f187a6d114ae9ac48dcd5db889014 [2024-11-23 23:05:41,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:05:41,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:05:41,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:05:41,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:05:41,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:05:41,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:05:41" (1/1) ... [2024-11-23 23:05:41,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a736b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:41, skipping insertion in model container [2024-11-23 23:05:41,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:05:41" (1/1) ... [2024-11-23 23:05:41,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:05:41,642 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_27e5d1f8-67d7-400c-abdb-4db5d140d808/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i[915,928] [2024-11-23 23:05:42,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:05:42,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:05:42,185 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_27e5d1f8-67d7-400c-abdb-4db5d140d808/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i[915,928] [2024-11-23 23:05:42,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:05:42,458 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:05:42,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42 WrapperNode [2024-11-23 23:05:42,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:05:42,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:05:42,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:05:42,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:05:42,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:42,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:42,765 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 752 [2024-11-23 23:05:42,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:05:42,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:05:42,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:05:42,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:05:42,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:42,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:42,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:42,985 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]. [2024-11-23 23:05:42,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:42,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,071 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:05:43,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:05:43,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:05:43,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:05:43,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (1/1) ... [2024-11-23 23:05:43,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:05:43,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:43,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:05:43,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:05:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:05:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:05:43,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:05:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:05:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:05:43,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:05:43,532 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:05:43,534 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:05:45,976 INFO L? ?]: Removed 98 outVars from TransFormulas that were not future-live. [2024-11-23 23:05:45,977 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:05:46,004 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:05:46,005 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:05:46,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:05:46 BoogieIcfgContainer [2024-11-23 23:05:46,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:05:46,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:05:46,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:05:46,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:05:46,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:05:41" (1/3) ... [2024-11-23 23:05:46,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a41ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:05:46, skipping insertion in model container [2024-11-23 23:05:46,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:05:42" (2/3) ... [2024-11-23 23:05:46,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a41ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:05:46, skipping insertion in model container [2024-11-23 23:05:46,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:05:46" (3/3) ... [2024-11-23 23:05:46,025 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-1.i [2024-11-23 23:05:46,047 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:05:46,052 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-1.i that has 2 procedures, 297 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:05:46,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:05:46,197 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;@163750f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:05:46,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:05:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 233 states have (on average 1.553648068669528) internal successors, (362), 234 states have internal predecessors, (362), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-23 23:05:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-23 23:05:46,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:46,260 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:46,261 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:46,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1914085921, now seen corresponding path program 1 times [2024-11-23 23:05:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:46,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109858239] [2024-11-23 23:05:46,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-23 23:05:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109858239] [2024-11-23 23:05:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109858239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714795363] [2024-11-23 23:05:47,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:47,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:47,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:05:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:48,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:05:48,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-23 23:05:48,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:48,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714795363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:48,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:48,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:05:48,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371564551] [2024-11-23 23:05:48,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:48,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:05:48,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:48,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:05:48,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:05:48,423 INFO L87 Difference]: Start difference. First operand has 297 states, 233 states have (on average 1.553648068669528) internal successors, (362), 234 states have internal predecessors, (362), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-23 23:05:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:48,541 INFO L93 Difference]: Finished difference Result 584 states and 1017 transitions. [2024-11-23 23:05:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:05:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 436 [2024-11-23 23:05:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:48,563 INFO L225 Difference]: With dead ends: 584 [2024-11-23 23:05:48,563 INFO L226 Difference]: Without dead ends: 290 [2024-11-23 23:05:48,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:05:48,574 INFO L435 NwaCegarLoop]: 469 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, 469 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 [2024-11-23 23:05:48,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:05:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-23 23:05:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-23 23:05:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 227 states have (on average 1.52863436123348) internal successors, (347), 227 states have internal predecessors, (347), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-23 23:05:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 469 transitions. [2024-11-23 23:05:48,701 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 469 transitions. Word has length 436 [2024-11-23 23:05:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:48,704 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 469 transitions. [2024-11-23 23:05:48,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-23 23:05:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 469 transitions. [2024-11-23 23:05:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-23 23:05:48,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:48,724 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:48,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:48,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:48,929 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:48,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1750067161, now seen corresponding path program 1 times [2024-11-23 23:05:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828708195] [2024-11-23 23:05:48,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:48,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:05:49,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828708195] [2024-11-23 23:05:49,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828708195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:49,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:49,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:05:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283521648] [2024-11-23 23:05:49,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:49,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:05:49,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:49,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:05:49,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:05:49,885 INFO L87 Difference]: Start difference. First operand 290 states and 469 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:50,086 INFO L93 Difference]: Finished difference Result 739 states and 1197 transitions. [2024-11-23 23:05:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:05:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-23 23:05:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:50,095 INFO L225 Difference]: With dead ends: 739 [2024-11-23 23:05:50,096 INFO L226 Difference]: Without dead ends: 452 [2024-11-23 23:05:50,098 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 [2024-11-23 23:05:50,099 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 235 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:50,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1069 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:05:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-23 23:05:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 345. [2024-11-23 23:05:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 282 states have (on average 1.5567375886524824) internal successors, (439), 282 states have internal predecessors, (439), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-23 23:05:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 561 transitions. [2024-11-23 23:05:50,166 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 561 transitions. Word has length 436 [2024-11-23 23:05:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:50,172 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 561 transitions. [2024-11-23 23:05:50,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 561 transitions. [2024-11-23 23:05:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-23 23:05:50,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:50,183 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:50,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:05:50,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:50,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1577549481, now seen corresponding path program 1 times [2024-11-23 23:05:50,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:50,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44028110] [2024-11-23 23:05:50,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:05:52,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:52,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44028110] [2024-11-23 23:05:52,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44028110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:52,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:52,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:05:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398060824] [2024-11-23 23:05:52,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:52,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:05:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:52,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:05:52,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:05:52,577 INFO L87 Difference]: Start difference. First operand 345 states and 561 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:52,741 INFO L93 Difference]: Finished difference Result 1029 states and 1677 transitions. [2024-11-23 23:05:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:05:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-23 23:05:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:52,754 INFO L225 Difference]: With dead ends: 1029 [2024-11-23 23:05:52,755 INFO L226 Difference]: Without dead ends: 687 [2024-11-23 23:05:52,757 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 [2024-11-23 23:05:52,760 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 323 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:52,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 922 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:05:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-23 23:05:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 665. [2024-11-23 23:05:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 540 states have (on average 1.5518518518518518) internal successors, (838), 540 states have internal predecessors, (838), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-23 23:05:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1082 transitions. [2024-11-23 23:05:52,885 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1082 transitions. Word has length 436 [2024-11-23 23:05:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:52,889 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1082 transitions. [2024-11-23 23:05:52,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1082 transitions. [2024-11-23 23:05:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-23 23:05:52,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:52,908 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:52,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:05:52,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:52,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1593068199, now seen corresponding path program 1 times [2024-11-23 23:05:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:52,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709229511] [2024-11-23 23:05:52,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:05:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709229511] [2024-11-23 23:05:55,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709229511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:55,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:55,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:05:55,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365230047] [2024-11-23 23:05:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:55,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:55,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:55,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:55,131 INFO L87 Difference]: Start difference. First operand 665 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:55,657 INFO L93 Difference]: Finished difference Result 2103 states and 3407 transitions. [2024-11-23 23:05:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:05:55,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-23 23:05:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:55,670 INFO L225 Difference]: With dead ends: 2103 [2024-11-23 23:05:55,670 INFO L226 Difference]: Without dead ends: 1441 [2024-11-23 23:05:55,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:05:55,674 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 660 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:55,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1315 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:05:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2024-11-23 23:05:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1251. [2024-11-23 23:05:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1108 states have (on average 1.5866425992779782) internal successors, (1758), 1110 states have internal predecessors, (1758), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-23 23:05:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 2034 transitions. [2024-11-23 23:05:55,858 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 2034 transitions. Word has length 436 [2024-11-23 23:05:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:55,861 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 2034 transitions. [2024-11-23 23:05:55,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 2034 transitions. [2024-11-23 23:05:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-23 23:05:55,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:55,877 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:55,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:05:55,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:55,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash 330159835, now seen corresponding path program 1 times [2024-11-23 23:05:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583007841] [2024-11-23 23:05:55,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:05:59,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:59,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583007841] [2024-11-23 23:05:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583007841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:59,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:59,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:05:59,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235997842] [2024-11-23 23:05:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:59,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:59,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:59,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:59,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:59,063 INFO L87 Difference]: Start difference. First operand 1251 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:59,319 INFO L93 Difference]: Finished difference Result 2999 states and 4860 transitions. [2024-11-23 23:05:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:05:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2024-11-23 23:05:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:59,337 INFO L225 Difference]: With dead ends: 2999 [2024-11-23 23:05:59,337 INFO L226 Difference]: Without dead ends: 1751 [2024-11-23 23:05:59,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:59,342 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 264 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:59,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1339 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:05:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2024-11-23 23:05:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1259. [2024-11-23 23:05:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1116 states have (on average 1.586021505376344) internal successors, (1770), 1118 states have internal predecessors, (1770), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-23 23:05:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2046 transitions. [2024-11-23 23:05:59,508 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2046 transitions. Word has length 436 [2024-11-23 23:05:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:59,510 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 2046 transitions. [2024-11-23 23:05:59,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:05:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2046 transitions. [2024-11-23 23:05:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-23 23:05:59,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:59,523 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:59,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:05:59,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:59,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2009811705, now seen corresponding path program 1 times [2024-11-23 23:05:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:59,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673339750] [2024-11-23 23:05:59,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:06:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673339750] [2024-11-23 23:06:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673339750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:03,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:03,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:06:03,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178695575] [2024-11-23 23:06:03,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:03,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:06:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:03,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:06:03,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:06:03,167 INFO L87 Difference]: Start difference. First operand 1259 states and 2046 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:06:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:04,658 INFO L93 Difference]: Finished difference Result 3804 states and 6171 transitions. [2024-11-23 23:06:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:06:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 437 [2024-11-23 23:06:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:04,678 INFO L225 Difference]: With dead ends: 3804 [2024-11-23 23:06:04,678 INFO L226 Difference]: Without dead ends: 2548 [2024-11-23 23:06:04,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:06:04,683 INFO L435 NwaCegarLoop]: 679 mSDtfsCounter, 635 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:04,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1831 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:06:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2024-11-23 23:06:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2545. [2024-11-23 23:06:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2246 states have (on average 1.577025823686554) internal successors, (3542), 2251 states have internal predecessors, (3542), 286 states have call successors, (286), 12 states have call predecessors, (286), 12 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) [2024-11-23 23:06:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4114 transitions. [2024-11-23 23:06:05,032 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4114 transitions. Word has length 437 [2024-11-23 23:06:05,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:05,033 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 4114 transitions. [2024-11-23 23:06:05,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:06:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4114 transitions. [2024-11-23 23:06:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-23 23:06:05,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:05,052 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:05,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:06:05,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:05,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash -406024645, now seen corresponding path program 1 times [2024-11-23 23:06:05,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:05,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907447359] [2024-11-23 23:06:05,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:06:07,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907447359] [2024-11-23 23:06:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907447359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:07,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:07,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:06:07,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895771885] [2024-11-23 23:06:07,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:07,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:06:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:07,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:06:07,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:06:07,638 INFO L87 Difference]: Start difference. First operand 2545 states and 4114 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:06:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:08,618 INFO L93 Difference]: Finished difference Result 7333 states and 11833 transitions. [2024-11-23 23:06:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:06:08,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 437 [2024-11-23 23:06:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:08,661 INFO L225 Difference]: With dead ends: 7333 [2024-11-23 23:06:08,661 INFO L226 Difference]: Without dead ends: 6077 [2024-11-23 23:06:08,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:06:08,669 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 645 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:08,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 2144 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:06:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2024-11-23 23:06:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5065. [2024-11-23 23:06:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5065 states, 4480 states have (on average 1.5785714285714285) internal successors, (7072), 4489 states have internal predecessors, (7072), 562 states have call successors, (562), 22 states have call predecessors, (562), 22 states have return successors, (562), 553 states have call predecessors, (562), 562 states have call successors, (562) [2024-11-23 23:06:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 8196 transitions. [2024-11-23 23:06:09,242 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 8196 transitions. Word has length 437 [2024-11-23 23:06:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:09,243 INFO L471 AbstractCegarLoop]: Abstraction has 5065 states and 8196 transitions. [2024-11-23 23:06:09,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:06:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 8196 transitions. [2024-11-23 23:06:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-23 23:06:09,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:09,259 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:09,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:06:09,260 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:09,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1390045769, now seen corresponding path program 1 times [2024-11-23 23:06:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973414953] [2024-11-23 23:06:09,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:09,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:06:11,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:11,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973414953] [2024-11-23 23:06:11,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973414953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:11,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:11,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:06:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963326100] [2024-11-23 23:06:11,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:11,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:06:11,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:11,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:06:11,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:06:11,221 INFO L87 Difference]: Start difference. First operand 5065 states and 8196 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:06:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:11,506 INFO L93 Difference]: Finished difference Result 10135 states and 16405 transitions. [2024-11-23 23:06:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:06:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 438 [2024-11-23 23:06:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:11,543 INFO L225 Difference]: With dead ends: 10135 [2024-11-23 23:06:11,543 INFO L226 Difference]: Without dead ends: 5097 [2024-11-23 23:06:11,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:06:11,557 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:11,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1393 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:06:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2024-11-23 23:06:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 5097. [2024-11-23 23:06:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 4512 states have (on average 1.574468085106383) internal successors, (7104), 4521 states have internal predecessors, (7104), 562 states have call successors, (562), 22 states have call predecessors, (562), 22 states have return successors, (562), 553 states have call predecessors, (562), 562 states have call successors, (562) [2024-11-23 23:06:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 8228 transitions. [2024-11-23 23:06:12,099 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 8228 transitions. Word has length 438 [2024-11-23 23:06:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:12,100 INFO L471 AbstractCegarLoop]: Abstraction has 5097 states and 8228 transitions. [2024-11-23 23:06:12,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:06:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 8228 transitions. [2024-11-23 23:06:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-23 23:06:12,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:12,116 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:12,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:06:12,119 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:12,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1002273106, now seen corresponding path program 1 times [2024-11-23 23:06:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974146390] [2024-11-23 23:06:12,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-23 23:12:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974146390] [2024-11-23 23:12:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974146390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165521058] [2024-11-23 23:12:28,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:28,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:28,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:12:28,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:12:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:28,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:12:28,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3907 proven. 198 refuted. 0 times theorem prover too weak. 3215 trivial. 0 not checked. [2024-11-23 23:12:30,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 156 proven. 201 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2024-11-23 23:12:32,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165521058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:12:32,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:12:32,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 8, 8] total 40 [2024-11-23 23:12:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695131958] [2024-11-23 23:12:32,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:32,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-23 23:12:32,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:32,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-23 23:12:32,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1432, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 23:12:32,295 INFO L87 Difference]: Start difference. First operand 5097 states and 8228 transitions. Second operand has 40 states, 40 states have (on average 8.0) internal successors, (320), 40 states have internal predecessors, (320), 9 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (158), 9 states have call predecessors, (158), 9 states have call successors, (158) [2024-11-23 23:15:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:36,821 INFO L93 Difference]: Finished difference Result 24933 states and 39566 transitions. [2024-11-23 23:15:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-23 23:15:36,822 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.0) internal successors, (320), 40 states have internal predecessors, (320), 9 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (158), 9 states have call predecessors, (158), 9 states have call successors, (158) Word has length 439 [2024-11-23 23:15:36,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:36,896 INFO L225 Difference]: With dead ends: 24933 [2024-11-23 23:15:36,896 INFO L226 Difference]: Without dead ends: 19863 [2024-11-23 23:15:36,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3465 ImplicationChecksByTransitivity, 129.7s TimeCoverageRelationStatistics Valid=2931, Invalid=10179, Unknown=0, NotChecked=0, Total=13110 [2024-11-23 23:15:36,913 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 14518 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 13987 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14544 SdHoareTripleChecker+Valid, 8564 SdHoareTripleChecker+Invalid, 14649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 13987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:36,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14544 Valid, 8564 Invalid, 14649 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [662 Valid, 13987 Invalid, 0 Unknown, 0 Unchecked, 75.6s Time] [2024-11-23 23:15:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19863 states. [2024-11-23 23:15:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19863 to 8269. [2024-11-23 23:15:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8269 states, 7516 states have (on average 1.5702501330494945) internal successors, (11802), 7527 states have internal predecessors, (11802), 700 states have call successors, (700), 52 states have call predecessors, (700), 52 states have return successors, (700), 689 states have call predecessors, (700), 700 states have call successors, (700) [2024-11-23 23:15:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 13202 transitions. [2024-11-23 23:15:37,594 INFO L78 Accepts]: Start accepts. Automaton has 8269 states and 13202 transitions. Word has length 439 [2024-11-23 23:15:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:37,595 INFO L471 AbstractCegarLoop]: Abstraction has 8269 states and 13202 transitions. [2024-11-23 23:15:37,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.0) internal successors, (320), 40 states have internal predecessors, (320), 9 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (158), 9 states have call predecessors, (158), 9 states have call successors, (158) [2024-11-23 23:15:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8269 states and 13202 transitions. [2024-11-23 23:15:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-23 23:15:37,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:37,616 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:37,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:15:37,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:37,817 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:37,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -740578873, now seen corresponding path program 1 times [2024-11-23 23:15:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014879153] [2024-11-23 23:15:37,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:15:39,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014879153] [2024-11-23 23:15:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014879153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:39,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:39,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:15:39,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463288858] [2024-11-23 23:15:39,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:39,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:15:39,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:39,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:15:39,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:15:39,243 INFO L87 Difference]: Start difference. First operand 8269 states and 13202 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-23 23:15:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:40,015 INFO L93 Difference]: Finished difference Result 16543 states and 26393 transitions. [2024-11-23 23:15:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:15:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 439 [2024-11-23 23:15:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:40,048 INFO L225 Difference]: With dead ends: 16543 [2024-11-23 23:15:40,048 INFO L226 Difference]: Without dead ends: 8301 [2024-11-23 23:15:40,063 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 [2024-11-23 23:15:40,064 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 596 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:40,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 438 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:15:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2024-11-23 23:15:40,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 7797. [2024-11-23 23:15:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7797 states, 7036 states have (on average 1.5642410460488914) internal successors, (11006), 7047 states have internal predecessors, (11006), 700 states have call successors, (700), 60 states have call predecessors, (700), 60 states have return successors, (700), 689 states have call predecessors, (700), 700 states have call successors, (700) [2024-11-23 23:15:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 12406 transitions. [2024-11-23 23:15:40,871 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 12406 transitions. Word has length 439 [2024-11-23 23:15:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:40,873 INFO L471 AbstractCegarLoop]: Abstraction has 7797 states and 12406 transitions. [2024-11-23 23:15:40,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-23 23:15:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 12406 transitions. [2024-11-23 23:15:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-23 23:15:40,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:40,883 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:40,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:15:40,885 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:40,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1601561294, now seen corresponding path program 1 times [2024-11-23 23:15:40,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:40,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357966369] [2024-11-23 23:15:40,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:15:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:50,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357966369] [2024-11-23 23:15:50,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357966369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:50,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:50,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:15:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286904475] [2024-11-23 23:15:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:50,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:15:50,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:50,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:15:50,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:15:50,960 INFO L87 Difference]: Start difference. First operand 7797 states and 12406 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-23 23:15:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:54,096 INFO L93 Difference]: Finished difference Result 22325 states and 35471 transitions. [2024-11-23 23:15:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:15:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 439 [2024-11-23 23:15:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:54,140 INFO L225 Difference]: With dead ends: 22325 [2024-11-23 23:15:54,140 INFO L226 Difference]: Without dead ends: 14555 [2024-11-23 23:15:54,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:15:54,153 INFO L435 NwaCegarLoop]: 552 mSDtfsCounter, 1888 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:54,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 2340 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:15:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14555 states. [2024-11-23 23:15:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14555 to 12132. [2024-11-23 23:15:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12132 states, 11199 states have (on average 1.5754085186177338) internal successors, (17643), 11217 states have internal predecessors, (17643), 847 states have call successors, (847), 85 states have call predecessors, (847), 85 states have return successors, (847), 829 states have call predecessors, (847), 847 states have call successors, (847) [2024-11-23 23:15:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12132 states to 12132 states and 19337 transitions. [2024-11-23 23:15:55,041 INFO L78 Accepts]: Start accepts. Automaton has 12132 states and 19337 transitions. Word has length 439 [2024-11-23 23:15:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:55,042 INFO L471 AbstractCegarLoop]: Abstraction has 12132 states and 19337 transitions. [2024-11-23 23:15:55,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-23 23:15:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 12132 states and 19337 transitions. [2024-11-23 23:15:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-23 23:15:55,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:55,059 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:55,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:15:55,060 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:55,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1241621712, now seen corresponding path program 1 times [2024-11-23 23:15:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:55,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920491634] [2024-11-23 23:15:55,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:15:56,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920491634] [2024-11-23 23:15:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920491634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:56,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800551861] [2024-11-23 23:15:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:56,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:56,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:56,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:56,216 INFO L87 Difference]: Start difference. First operand 12132 states and 19337 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-23 23:15:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:57,555 INFO L93 Difference]: Finished difference Result 28628 states and 45564 transitions. [2024-11-23 23:15:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:15:57,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 439 [2024-11-23 23:15:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:57,609 INFO L225 Difference]: With dead ends: 28628 [2024-11-23 23:15:57,609 INFO L226 Difference]: Without dead ends: 19794 [2024-11-23 23:15:57,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:57,629 INFO L435 NwaCegarLoop]: 631 mSDtfsCounter, 924 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:57,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 937 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:15:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19794 states. [2024-11-23 23:15:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19794 to 19666. [2024-11-23 23:15:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19666 states, 18378 states have (on average 1.5801501795625204) internal successors, (29040), 18422 states have internal predecessors, (29040), 1163 states have call successors, (1163), 124 states have call predecessors, (1163), 124 states have return successors, (1163), 1119 states have call predecessors, (1163), 1163 states have call successors, (1163) [2024-11-23 23:15:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19666 states to 19666 states and 31366 transitions. [2024-11-23 23:15:58,955 INFO L78 Accepts]: Start accepts. Automaton has 19666 states and 31366 transitions. Word has length 439 [2024-11-23 23:15:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:58,956 INFO L471 AbstractCegarLoop]: Abstraction has 19666 states and 31366 transitions. [2024-11-23 23:15:58,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-23 23:15:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19666 states and 31366 transitions. [2024-11-23 23:15:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-23 23:15:58,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:58,976 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:58,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:15:58,976 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:58,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash 719952946, now seen corresponding path program 1 times [2024-11-23 23:15:58,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272136362] [2024-11-23 23:15:58,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 12 proven. 168 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-23 23:16:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272136362] [2024-11-23 23:16:01,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272136362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:16:01,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267182304] [2024-11-23 23:16:01,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:01,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:16:01,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:16:01,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:16:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:16:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:02,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:16:02,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:16:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2598 proven. 39 refuted. 0 times theorem prover too weak. 4683 trivial. 0 not checked. [2024-11-23 23:16:02,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:16:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 141 proven. 39 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-23 23:16:03,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267182304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:16:03,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:16:03,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2024-11-23 23:16:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246302361] [2024-11-23 23:16:03,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:16:03,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:16:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:03,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:16:03,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:16:03,511 INFO L87 Difference]: Start difference. First operand 19666 states and 31366 transitions. Second operand has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 6 states have call successors, (183), 3 states have call predecessors, (183), 6 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) [2024-11-23 23:16:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:07,007 INFO L93 Difference]: Finished difference Result 45678 states and 72561 transitions. [2024-11-23 23:16:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:16:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 6 states have call successors, (183), 3 states have call predecessors, (183), 6 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) Word has length 439 [2024-11-23 23:16:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:07,068 INFO L225 Difference]: With dead ends: 45678 [2024-11-23 23:16:07,068 INFO L226 Difference]: Without dead ends: 26177 [2024-11-23 23:16:07,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:16:07,091 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 4066 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4071 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:07,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4071 Valid, 2961 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:16:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26177 states. [2024-11-23 23:16:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26177 to 23067. [2024-11-23 23:16:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23067 states, 21717 states have (on average 1.5792236496753695) internal successors, (34296), 21761 states have internal predecessors, (34296), 1163 states have call successors, (1163), 186 states have call predecessors, (1163), 186 states have return successors, (1163), 1119 states have call predecessors, (1163), 1163 states have call successors, (1163) [2024-11-23 23:16:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23067 states to 23067 states and 36622 transitions. [2024-11-23 23:16:08,838 INFO L78 Accepts]: Start accepts. Automaton has 23067 states and 36622 transitions. Word has length 439 [2024-11-23 23:16:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:08,838 INFO L471 AbstractCegarLoop]: Abstraction has 23067 states and 36622 transitions. [2024-11-23 23:16:08,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 6 states have call successors, (183), 3 states have call predecessors, (183), 6 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) [2024-11-23 23:16:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 23067 states and 36622 transitions. [2024-11-23 23:16:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-23 23:16:08,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:08,858 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:16:08,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:16:09,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27e5d1f8-67d7-400c-abdb-4db5d140d808/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:16:09,059 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:09,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1486695611, now seen corresponding path program 1 times [2024-11-23 23:16:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083193346] [2024-11-23 23:16:09,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-23 23:16:10,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083193346] [2024-11-23 23:16:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083193346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:16:10,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:16:10,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:16:10,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987306526] [2024-11-23 23:16:10,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:16:10,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:16:10,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:10,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:16:10,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:16:10,023 INFO L87 Difference]: Start difference. First operand 23067 states and 36622 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:16:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:11,194 INFO L93 Difference]: Finished difference Result 41493 states and 65569 transitions. [2024-11-23 23:16:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:16:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 440 [2024-11-23 23:16:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:11,243 INFO L225 Difference]: With dead ends: 41493 [2024-11-23 23:16:11,243 INFO L226 Difference]: Without dead ends: 23715 [2024-11-23 23:16:11,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:16:11,263 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 227 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:11,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1117 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:16:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23715 states. [2024-11-23 23:16:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23715 to 23283. [2024-11-23 23:16:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23283 states, 21879 states have (on average 1.569358745829334) internal successors, (34336), 21923 states have internal predecessors, (34336), 1163 states have call successors, (1163), 240 states have call predecessors, (1163), 240 states have return successors, (1163), 1119 states have call predecessors, (1163), 1163 states have call successors, (1163) [2024-11-23 23:16:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23283 states to 23283 states and 36662 transitions. [2024-11-23 23:16:12,699 INFO L78 Accepts]: Start accepts. Automaton has 23283 states and 36662 transitions. Word has length 440 [2024-11-23 23:16:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:12,700 INFO L471 AbstractCegarLoop]: Abstraction has 23283 states and 36662 transitions. [2024-11-23 23:16:12,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-23 23:16:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23283 states and 36662 transitions. [2024-11-23 23:16:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-23 23:16:12,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:12,719 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:16:12,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:16:12,719 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:12,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 202248131, now seen corresponding path program 1 times [2024-11-23 23:16:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:12,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73302628] [2024-11-23 23:16:12,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat