./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b0d381d265ef579b87dc204e4bf201472b6c1640922289c165a4e9815d5548b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:38:27,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:38:27,705 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:38:27,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:38:27,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:38:27,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:38:27,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:38:27,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:38:27,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:38:27,749 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:38:27,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:38:27,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:38:27,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:38:27,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:38:27,751 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:38:27,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:38:27,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:38:27,751 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:38:27,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:38:27,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:38:27,752 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:27,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:27,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:27,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:38:27,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:38:27,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:38:27,754 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:38:27,754 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:38:27,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:38:27,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:38:27,755 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_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0d381d265ef579b87dc204e4bf201472b6c1640922289c165a4e9815d5548b [2024-11-27 23:38:28,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:38:28,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:38:28,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:38:28,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:38:28,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:38:28,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i [2024-11-27 23:38:31,062 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/data/a33e84d2b/d2a219ff1dba487fa8926d74c5887ddf/FLAGef87b426a [2024-11-27 23:38:31,384 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:38:31,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i [2024-11-27 23:38:31,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/data/a33e84d2b/d2a219ff1dba487fa8926d74c5887ddf/FLAGef87b426a [2024-11-27 23:38:31,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/data/a33e84d2b/d2a219ff1dba487fa8926d74c5887ddf [2024-11-27 23:38:31,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:38:31,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:38:31,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:31,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:38:31,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:38:31,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:31,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5067d3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31, skipping insertion in model container [2024-11-27 23:38:31,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:31,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:38:31,620 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_b217c150-19db-495e-a73c-4f09bd5e326c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i[916,929] [2024-11-27 23:38:31,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:31,815 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:38:31,830 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_b217c150-19db-495e-a73c-4f09bd5e326c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-39.i[916,929] [2024-11-27 23:38:31,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:31,960 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:38:31,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31 WrapperNode [2024-11-27 23:38:31,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:31,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:31,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:38:31,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:38:31,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:31,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,104 INFO L138 Inliner]: procedures = 26, calls = 88, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 553 [2024-11-27 23:38:32,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:32,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:38:32,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:38:32,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:38:32,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,178 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]. [2024-11-27 23:38:32,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,209 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:38:32,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:38:32,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:38:32,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:38:32,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (1/1) ... [2024-11-27 23:38:32,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:32,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:38:32,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:38:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:38:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:38:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:38:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:38:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:38:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:38:32,509 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:38:32,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:38:33,921 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-27 23:38:33,921 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:38:33,946 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:38:33,946 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:38:33,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:33 BoogieIcfgContainer [2024-11-27 23:38:33,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:38:33,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:38:33,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:38:33,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:38:33,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:38:31" (1/3) ... [2024-11-27 23:38:33,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ab83fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:33, skipping insertion in model container [2024-11-27 23:38:33,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:31" (2/3) ... [2024-11-27 23:38:33,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ab83fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:33, skipping insertion in model container [2024-11-27 23:38:33,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:33" (3/3) ... [2024-11-27 23:38:33,960 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-39.i [2024-11-27 23:38:33,975 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:38:33,979 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-39.i that has 2 procedures, 231 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:38:34,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:38:34,078 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;@514ce577, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:38:34,079 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:38:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 153 states have (on average 1.522875816993464) internal successors, (233), 154 states have internal predecessors, (233), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-27 23:38:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-27 23:38:34,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:34,127 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:34,128 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:34,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -473726290, now seen corresponding path program 1 times [2024-11-27 23:38:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:34,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446445513] [2024-11-27 23:38:34,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2024-11-27 23:38:34,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446445513] [2024-11-27 23:38:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446445513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031954115] [2024-11-27 23:38:34,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:34,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:34,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:38:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:38:35,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2024-11-27 23:38:35,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:38:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031954115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:38:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:38:35,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637551086] [2024-11-27 23:38:35,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:38:35,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:38:35,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:38:35,671 INFO L87 Difference]: Start difference. First operand has 231 states, 153 states have (on average 1.522875816993464) internal successors, (233), 154 states have internal predecessors, (233), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-27 23:38:35,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,755 INFO L93 Difference]: Finished difference Result 455 states and 835 transitions. [2024-11-27 23:38:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:38:35,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) Word has length 476 [2024-11-27 23:38:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,766 INFO L225 Difference]: With dead ends: 455 [2024-11-27 23:38:35,767 INFO L226 Difference]: Without dead ends: 227 [2024-11-27 23:38:35,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:38:35,778 INFO L435 NwaCegarLoop]: 375 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, 375 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 [2024-11-27 23:38:35,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-27 23:38:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-27 23:38:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 150 states have (on average 1.5) internal successors, (225), 150 states have internal predecessors, (225), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-27 23:38:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 375 transitions. [2024-11-27 23:38:35,881 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 375 transitions. Word has length 476 [2024-11-27 23:38:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,882 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 375 transitions. [2024-11-27 23:38:35,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-27 23:38:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 375 transitions. [2024-11-27 23:38:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-27 23:38:35,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,894 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:36,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:38:36,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:36,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1828495592, now seen corresponding path program 1 times [2024-11-27 23:38:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:36,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277032445] [2024-11-27 23:38:36,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:36,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277032445] [2024-11-27 23:38:36,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277032445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:36,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:36,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:36,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290149122] [2024-11-27 23:38:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:36,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:36,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:36,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:36,850 INFO L87 Difference]: Start difference. First operand 227 states and 375 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:36,979 INFO L93 Difference]: Finished difference Result 581 states and 964 transitions. [2024-11-27 23:38:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:36,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-27 23:38:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:36,989 INFO L225 Difference]: With dead ends: 581 [2024-11-27 23:38:36,989 INFO L226 Difference]: Without dead ends: 357 [2024-11-27 23:38:36,990 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 [2024-11-27 23:38:36,994 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 207 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:36,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 780 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-27 23:38:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2024-11-27 23:38:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 260 states have (on average 1.5538461538461539) internal successors, (404), 261 states have internal predecessors, (404), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-27 23:38:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 586 transitions. [2024-11-27 23:38:37,072 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 586 transitions. Word has length 476 [2024-11-27 23:38:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:37,073 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 586 transitions. [2024-11-27 23:38:37,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 586 transitions. [2024-11-27 23:38:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-27 23:38:37,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:37,088 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:37,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:38:37,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:37,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1364025958, now seen corresponding path program 1 times [2024-11-27 23:38:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676823170] [2024-11-27 23:38:37,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:37,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:37,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676823170] [2024-11-27 23:38:37,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676823170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:37,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016179460] [2024-11-27 23:38:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:37,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:37,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:37,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:37,707 INFO L87 Difference]: Start difference. First operand 354 states and 586 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:37,811 INFO L93 Difference]: Finished difference Result 951 states and 1570 transitions. [2024-11-27 23:38:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:37,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-27 23:38:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:37,839 INFO L225 Difference]: With dead ends: 951 [2024-11-27 23:38:37,841 INFO L226 Difference]: Without dead ends: 600 [2024-11-27 23:38:37,842 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 [2024-11-27 23:38:37,843 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 233 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:37,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 838 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-27 23:38:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 597. [2024-11-27 23:38:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 440 states have (on average 1.5386363636363636) internal successors, (677), 443 states have internal predecessors, (677), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-27 23:38:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 981 transitions. [2024-11-27 23:38:37,946 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 981 transitions. Word has length 476 [2024-11-27 23:38:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:37,951 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 981 transitions. [2024-11-27 23:38:37,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 981 transitions. [2024-11-27 23:38:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-27 23:38:37,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:37,965 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:37,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:38:37,965 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:37,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1504574568, now seen corresponding path program 1 times [2024-11-27 23:38:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:37,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300403621] [2024-11-27 23:38:37,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:38,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:38,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300403621] [2024-11-27 23:38:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300403621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:38,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:38,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454224667] [2024-11-27 23:38:38,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:38,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:38,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:38,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:38,617 INFO L87 Difference]: Start difference. First operand 597 states and 981 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:38,702 INFO L93 Difference]: Finished difference Result 1195 states and 1967 transitions. [2024-11-27 23:38:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-27 23:38:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:38,711 INFO L225 Difference]: With dead ends: 1195 [2024-11-27 23:38:38,711 INFO L226 Difference]: Without dead ends: 601 [2024-11-27 23:38:38,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:38,716 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:38,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-27 23:38:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2024-11-27 23:38:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 444 states have (on average 1.5337837837837838) internal successors, (681), 447 states have internal predecessors, (681), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-27 23:38:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 985 transitions. [2024-11-27 23:38:38,812 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 985 transitions. Word has length 476 [2024-11-27 23:38:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:38,817 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 985 transitions. [2024-11-27 23:38:38,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 985 transitions. [2024-11-27 23:38:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-27 23:38:38,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:38,836 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:38,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:38:38,836 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:38,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2094755999, now seen corresponding path program 1 times [2024-11-27 23:38:38,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:38,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119028641] [2024-11-27 23:38:38,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:38,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:39,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:39,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119028641] [2024-11-27 23:38:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119028641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:39,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:39,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028166397] [2024-11-27 23:38:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:39,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:39,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:39,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:39,528 INFO L87 Difference]: Start difference. First operand 601 states and 985 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:39,606 INFO L93 Difference]: Finished difference Result 1201 states and 1971 transitions. [2024-11-27 23:38:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:39,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 477 [2024-11-27 23:38:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:39,613 INFO L225 Difference]: With dead ends: 1201 [2024-11-27 23:38:39,613 INFO L226 Difference]: Without dead ends: 603 [2024-11-27 23:38:39,615 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 [2024-11-27 23:38:39,617 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:39,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-27 23:38:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-11-27 23:38:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 446 states have (on average 1.531390134529148) internal successors, (683), 449 states have internal predecessors, (683), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-27 23:38:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 987 transitions. [2024-11-27 23:38:39,707 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 987 transitions. Word has length 477 [2024-11-27 23:38:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:39,709 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 987 transitions. [2024-11-27 23:38:39,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 987 transitions. [2024-11-27 23:38:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 23:38:39,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:39,721 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:39,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:38:39,721 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:39,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -902482597, now seen corresponding path program 1 times [2024-11-27 23:38:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:39,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977466270] [2024-11-27 23:38:39,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:40,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977466270] [2024-11-27 23:38:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977466270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:40,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116544885] [2024-11-27 23:38:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:40,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:40,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:40,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:40,585 INFO L87 Difference]: Start difference. First operand 603 states and 987 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:40,765 INFO L93 Difference]: Finished difference Result 1803 states and 2955 transitions. [2024-11-27 23:38:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 478 [2024-11-27 23:38:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:40,778 INFO L225 Difference]: With dead ends: 1803 [2024-11-27 23:38:40,778 INFO L226 Difference]: Without dead ends: 1203 [2024-11-27 23:38:40,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:40,782 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 226 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:40,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 718 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-27 23:38:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1199. [2024-11-27 23:38:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 886 states have (on average 1.528216704288939) internal successors, (1354), 892 states have internal predecessors, (1354), 304 states have call successors, (304), 8 states have call predecessors, (304), 8 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2024-11-27 23:38:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1962 transitions. [2024-11-27 23:38:41,026 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1962 transitions. Word has length 478 [2024-11-27 23:38:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:41,028 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1962 transitions. [2024-11-27 23:38:41,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1962 transitions. [2024-11-27 23:38:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-27 23:38:41,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:41,040 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:41,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:38:41,041 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:41,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash 150334018, now seen corresponding path program 1 times [2024-11-27 23:38:41,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:41,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83326979] [2024-11-27 23:38:41,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:41,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 150 proven. 72 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-27 23:38:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83326979] [2024-11-27 23:38:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83326979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273225413] [2024-11-27 23:38:43,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:43,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:43,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:43,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:38:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:43,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:38:43,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 4974 proven. 72 refuted. 0 times theorem prover too weak. 6054 trivial. 0 not checked. [2024-11-27 23:38:45,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 150 proven. 72 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-27 23:38:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273225413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:46,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2024-11-27 23:38:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118518478] [2024-11-27 23:38:46,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:46,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:38:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:46,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:38:46,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:38:46,802 INFO L87 Difference]: Start difference. First operand 1199 states and 1962 transitions. Second operand has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (225), 3 states have call predecessors, (225), 6 states have return successors, (225), 6 states have call predecessors, (225), 6 states have call successors, (225) [2024-11-27 23:38:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:51,572 INFO L93 Difference]: Finished difference Result 7775 states and 12609 transitions. [2024-11-27 23:38:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 23:38:51,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (225), 3 states have call predecessors, (225), 6 states have return successors, (225), 6 states have call predecessors, (225), 6 states have call successors, (225) Word has length 479 [2024-11-27 23:38:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:51,621 INFO L225 Difference]: With dead ends: 7775 [2024-11-27 23:38:51,622 INFO L226 Difference]: Without dead ends: 6579 [2024-11-27 23:38:51,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:38:51,629 INFO L435 NwaCegarLoop]: 350 mSDtfsCounter, 1696 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:51,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 3116 Invalid, 3007 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [683 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-27 23:38:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2024-11-27 23:38:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 4699. [2024-11-27 23:38:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 3393 states have (on average 1.496610669024462) internal successors, (5078), 3424 states have internal predecessors, (5078), 1268 states have call successors, (1268), 37 states have call predecessors, (1268), 37 states have return successors, (1268), 1237 states have call predecessors, (1268), 1268 states have call successors, (1268) [2024-11-27 23:38:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 7614 transitions. [2024-11-27 23:38:52,387 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 7614 transitions. Word has length 479 [2024-11-27 23:38:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:52,389 INFO L471 AbstractCegarLoop]: Abstraction has 4699 states and 7614 transitions. [2024-11-27 23:38:52,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (225), 3 states have call predecessors, (225), 6 states have return successors, (225), 6 states have call predecessors, (225), 6 states have call successors, (225) [2024-11-27 23:38:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 7614 transitions. [2024-11-27 23:38:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-27 23:38:52,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:52,402 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:52,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:38:52,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:52,606 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:52,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1593618742, now seen corresponding path program 1 times [2024-11-27 23:38:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929925627] [2024-11-27 23:38:52,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929925627] [2024-11-27 23:38:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929925627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:38:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769246399] [2024-11-27 23:38:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:53,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:53,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:53,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:53,193 INFO L87 Difference]: Start difference. First operand 4699 states and 7614 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:54,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:54,152 INFO L93 Difference]: Finished difference Result 13501 states and 21882 transitions. [2024-11-27 23:38:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 479 [2024-11-27 23:38:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:54,209 INFO L225 Difference]: With dead ends: 13501 [2024-11-27 23:38:54,209 INFO L226 Difference]: Without dead ends: 9405 [2024-11-27 23:38:54,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:54,226 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 247 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:54,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 923 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:38:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2024-11-27 23:38:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 9403. [2024-11-27 23:38:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 6792 states have (on average 1.4961719670200235) internal successors, (10162), 6854 states have internal predecessors, (10162), 2536 states have call successors, (2536), 74 states have call predecessors, (2536), 74 states have return successors, (2536), 2474 states have call predecessors, (2536), 2536 states have call successors, (2536) [2024-11-27 23:38:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 15234 transitions. [2024-11-27 23:38:55,654 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 15234 transitions. Word has length 479 [2024-11-27 23:38:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:55,655 INFO L471 AbstractCegarLoop]: Abstraction has 9403 states and 15234 transitions. [2024-11-27 23:38:55,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 15234 transitions. [2024-11-27 23:38:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-27 23:38:55,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:55,666 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:55,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:38:55,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:55,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1210246887, now seen corresponding path program 1 times [2024-11-27 23:38:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603069926] [2024-11-27 23:38:55,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-27 23:38:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603069926] [2024-11-27 23:38:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603069926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:56,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:56,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:38:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301579132] [2024-11-27 23:38:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:56,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:56,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:56,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:56,198 INFO L87 Difference]: Start difference. First operand 9403 states and 15234 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:57,228 INFO L93 Difference]: Finished difference Result 17613 states and 28536 transitions. [2024-11-27 23:38:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:57,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 480 [2024-11-27 23:38:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:57,327 INFO L225 Difference]: With dead ends: 17613 [2024-11-27 23:38:57,327 INFO L226 Difference]: Without dead ends: 9415 [2024-11-27 23:38:57,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:38:57,356 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 246 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:57,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 936 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:38:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9415 states. [2024-11-27 23:38:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9415 to 9403. [2024-11-27 23:38:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 6792 states have (on average 1.4961719670200235) internal successors, (10162), 6854 states have internal predecessors, (10162), 2536 states have call successors, (2536), 74 states have call predecessors, (2536), 74 states have return successors, (2536), 2474 states have call predecessors, (2536), 2536 states have call successors, (2536) [2024-11-27 23:38:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 15234 transitions. [2024-11-27 23:38:58,760 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 15234 transitions. Word has length 480 [2024-11-27 23:38:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:58,762 INFO L471 AbstractCegarLoop]: Abstraction has 9403 states and 15234 transitions. [2024-11-27 23:38:58,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-27 23:38:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 15234 transitions. [2024-11-27 23:38:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-27 23:38:58,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:58,772 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:58,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:38:58,773 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:58,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash -207977653, now seen corresponding path program 1 times [2024-11-27 23:38:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:58,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240056261] [2024-11-27 23:38:58,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:58,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:38:59,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726172267] [2024-11-27 23:38:59,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:59,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:59,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:59,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:59,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:38:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:59,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:38:59,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 2972 proven. 33 refuted. 0 times theorem prover too weak. 8095 trivial. 0 not checked. [2024-11-27 23:39:00,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:01,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240056261] [2024-11-27 23:39:01,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:39:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726172267] [2024-11-27 23:39:01,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726172267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:01,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:39:01,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-27 23:39:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821661861] [2024-11-27 23:39:01,582 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:01,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:39:01,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:01,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:39:01,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:39:01,584 INFO L87 Difference]: Start difference. First operand 9403 states and 15234 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-27 23:39:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:03,581 INFO L93 Difference]: Finished difference Result 28387 states and 45870 transitions. [2024-11-27 23:39:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:39:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 480 [2024-11-27 23:39:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:03,677 INFO L225 Difference]: With dead ends: 28387 [2024-11-27 23:39:03,678 INFO L226 Difference]: Without dead ends: 18987 [2024-11-27 23:39:03,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:39:03,719 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 405 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:03,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1254 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:39:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18987 states. [2024-11-27 23:39:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18987 to 18841. [2024-11-27 23:39:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18841 states, 13610 states have (on average 1.4911094783247612) internal successors, (20294), 13734 states have internal predecessors, (20294), 5072 states have call successors, (5072), 158 states have call predecessors, (5072), 158 states have return successors, (5072), 4948 states have call predecessors, (5072), 5072 states have call successors, (5072) [2024-11-27 23:39:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18841 states to 18841 states and 30438 transitions. [2024-11-27 23:39:06,587 INFO L78 Accepts]: Start accepts. Automaton has 18841 states and 30438 transitions. Word has length 480 [2024-11-27 23:39:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:06,588 INFO L471 AbstractCegarLoop]: Abstraction has 18841 states and 30438 transitions. [2024-11-27 23:39:06,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-27 23:39:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18841 states and 30438 transitions. [2024-11-27 23:39:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-27 23:39:06,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:06,606 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:06,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:39:06,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:06,808 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:06,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2067258455, now seen corresponding path program 1 times [2024-11-27 23:39:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861084136] [2024-11-27 23:39:06,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:39:07,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749915700] [2024-11-27 23:39:07,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:07,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:07,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:07,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:07,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:39:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:07,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 23:39:07,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 6835 proven. 315 refuted. 0 times theorem prover too weak. 3950 trivial. 0 not checked. [2024-11-27 23:39:13,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:16,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861084136] [2024-11-27 23:39:16,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:39:16,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749915700] [2024-11-27 23:39:16,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749915700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:16,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:39:16,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-11-27 23:39:16,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18889482] [2024-11-27 23:39:16,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:16,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:39:16,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:16,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:39:16,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 23:39:16,690 INFO L87 Difference]: Start difference. First operand 18841 states and 30438 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 7 states have call successors, (75), 7 states have call predecessors, (75), 12 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2024-11-27 23:39:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:27,338 INFO L93 Difference]: Finished difference Result 76925 states and 122356 transitions. [2024-11-27 23:39:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-27 23:39:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 7 states have call successors, (75), 7 states have call predecessors, (75), 12 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) Word has length 481 [2024-11-27 23:39:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:27,621 INFO L225 Difference]: With dead ends: 76925 [2024-11-27 23:39:27,621 INFO L226 Difference]: Without dead ends: 58087 [2024-11-27 23:39:27,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1466, Invalid=5014, Unknown=0, NotChecked=0, Total=6480 [2024-11-27 23:39:27,688 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 2609 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 3588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:27,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 2597 Invalid, 3588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 23:39:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58087 states. [2024-11-27 23:39:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58087 to 32824. [2024-11-27 23:39:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32824 states, 25592 states have (on average 1.5229759299781183) internal successors, (38976), 25822 states have internal predecessors, (38976), 6873 states have call successors, (6873), 358 states have call predecessors, (6873), 358 states have return successors, (6873), 6643 states have call predecessors, (6873), 6873 states have call successors, (6873) [2024-11-27 23:39:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32824 states to 32824 states and 52722 transitions. [2024-11-27 23:39:32,207 INFO L78 Accepts]: Start accepts. Automaton has 32824 states and 52722 transitions. Word has length 481 [2024-11-27 23:39:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:32,208 INFO L471 AbstractCegarLoop]: Abstraction has 32824 states and 52722 transitions. [2024-11-27 23:39:32,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 26 states have internal predecessors, (142), 7 states have call successors, (75), 7 states have call predecessors, (75), 12 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2024-11-27 23:39:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 32824 states and 52722 transitions. [2024-11-27 23:39:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-27 23:39:32,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:32,235 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:32,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:39:32,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:39:32,439 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:32,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1994801401, now seen corresponding path program 1 times [2024-11-27 23:39:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593362389] [2024-11-27 23:39:32,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:39:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142247789] [2024-11-27 23:39:32,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:32,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:32,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:32,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:32,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b217c150-19db-495e-a73c-4f09bd5e326c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:39:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:33,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 23:39:33,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 8328 proven. 429 refuted. 0 times theorem prover too weak. 2343 trivial. 0 not checked. [2024-11-27 23:39:40,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593362389] [2024-11-27 23:39:44,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:39:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142247789] [2024-11-27 23:39:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142247789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:44,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:39:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2024-11-27 23:39:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746631359] [2024-11-27 23:39:44,532 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:44,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:39:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:44,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:39:44,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:39:44,535 INFO L87 Difference]: Start difference. First operand 32824 states and 52722 transitions. Second operand has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 27 states have internal predecessors, (139), 7 states have call successors, (75), 7 states have call predecessors, (75), 11 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2024-11-27 23:40:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:22,194 INFO L93 Difference]: Finished difference Result 201056 states and 316956 transitions. [2024-11-27 23:40:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-27 23:40:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 27 states have internal predecessors, (139), 7 states have call successors, (75), 7 states have call predecessors, (75), 11 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) Word has length 481 [2024-11-27 23:40:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:22,975 INFO L225 Difference]: With dead ends: 201056 [2024-11-27 23:40:22,976 INFO L226 Difference]: Without dead ends: 168235 [2024-11-27 23:40:23,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4385 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=2998, Invalid=10808, Unknown=0, NotChecked=0, Total=13806 [2024-11-27 23:40:23,087 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 3608 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 4843 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 5860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 4843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:23,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3667 Valid, 4578 Invalid, 5860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1017 Valid, 4843 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2024-11-27 23:40:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168235 states.