./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-035.c --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_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/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_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-035.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/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_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/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 07a21c82e6fc1c57d4d3d3875ad71cda705bf32daab84bd8ad81db243ce6cd9c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:59:27,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:59:28,071 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:59:28,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:59:28,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:59:28,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:59:28,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:59:28,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:59:28,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:59:28,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:59:28,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:59:28,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:59:28,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:59:28,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:59:28,126 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:59:28,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:59:28,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:59:28,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:59:28,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:59:28,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:59:28,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:59:28,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:59:28,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:59:28,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:59:28,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:59:28,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:59:28,129 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:59:28,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:59:28,129 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:59:28,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:28,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:28,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:28,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:28,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:28,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:59:28,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:59:28,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:59:28,132 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_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/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 -> 07a21c82e6fc1c57d4d3d3875ad71cda705bf32daab84bd8ad81db243ce6cd9c [2024-11-28 02:59:28,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:59:28,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:59:28,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:59:28,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:59:28,489 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:59:28,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-035.c [2024-11-28 02:59:31,588 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/data/008c73467/a679ab7637cb45eca3869b8cbbc289b1/FLAGcb71244e6 [2024-11-28 02:59:31,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:59:31,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/sv-benchmarks/c/xcsp/Dubois-035.c [2024-11-28 02:59:31,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/data/008c73467/a679ab7637cb45eca3869b8cbbc289b1/FLAGcb71244e6 [2024-11-28 02:59:31,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/data/008c73467/a679ab7637cb45eca3869b8cbbc289b1 [2024-11-28 02:59:31,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:59:31,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:59:31,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:31,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:59:31,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:59:31,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:31" (1/1) ... [2024-11-28 02:59:31,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea957a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:31, skipping insertion in model container [2024-11-28 02:59:31,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:31" (1/1) ... [2024-11-28 02:59:32,037 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:59:32,448 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_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/sv-benchmarks/c/xcsp/Dubois-035.c[24720,24733] [2024-11-28 02:59:32,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:32,504 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:59:32,656 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_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/sv-benchmarks/c/xcsp/Dubois-035.c[24720,24733] [2024-11-28 02:59:32,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:32,689 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:59:32,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32 WrapperNode [2024-11-28 02:59:32,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:32,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:32,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:59:32,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:59:32,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:32,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,218 INFO L138 Inliner]: procedures = 13, calls = 287, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6981 [2024-11-28 02:59:33,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:33,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:59:33,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:59:33,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:59:33,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,448 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:59:33,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,644 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:59:33,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:59:33,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:59:33,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:59:33,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (1/1) ... [2024-11-28 02:59:33,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:33,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:59:33,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:59:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:59:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:59:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:59:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:59:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 02:59:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 02:59:34,334 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:59:34,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:59:43,230 INFO L? ?]: Removed 2420 outVars from TransFormulas that were not future-live. [2024-11-28 02:59:43,231 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:59:43,322 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:59:43,326 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:59:43,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:43 BoogieIcfgContainer [2024-11-28 02:59:43,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:59:43,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:59:43,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:59:43,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:59:43,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:31" (1/3) ... [2024-11-28 02:59:43,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d608fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:43, skipping insertion in model container [2024-11-28 02:59:43,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:32" (2/3) ... [2024-11-28 02:59:43,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d608fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:43, skipping insertion in model container [2024-11-28 02:59:43,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:43" (3/3) ... [2024-11-28 02:59:43,341 INFO L128 eAbstractionObserver]: Analyzing ICFG Dubois-035.c [2024-11-28 02:59:43,361 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:59:43,363 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-035.c that has 2 procedures, 2776 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:59:43,543 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:59:43,563 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;@18efd0ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:59:43,563 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:59:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 2776 states, 2493 states have (on average 1.618531889290012) internal successors, (4035), 2494 states have internal predecessors, (4035), 280 states have call successors, (280), 1 states have call predecessors, (280), 1 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-28 02:59:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2349 [2024-11-28 02:59:43,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:43,773 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:43,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:43,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash -283917648, now seen corresponding path program 1 times [2024-11-28 02:59:43,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:43,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50438419] [2024-11-28 02:59:43,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:43,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 0 proven. 558 refuted. 0 times theorem prover too weak. 155682 trivial. 0 not checked. [2024-11-28 02:59:46,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50438419] [2024-11-28 02:59:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50438419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119574208] [2024-11-28 02:59:46,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:46,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:46,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:46,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:59:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:47,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 5136 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:59:47,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 155682 trivial. 0 not checked. [2024-11-28 02:59:48,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:48,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119574208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:48,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:48,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:59:48,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82986174] [2024-11-28 02:59:48,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:48,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:59:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:48,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:59:48,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:59:48,077 INFO L87 Difference]: Start difference. First operand has 2776 states, 2493 states have (on average 1.618531889290012) internal successors, (4035), 2494 states have internal predecessors, (4035), 280 states have call successors, (280), 1 states have call predecessors, (280), 1 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) Second operand has 2 states, 2 states have (on average 476.5) internal successors, (953), 2 states have internal predecessors, (953), 2 states have call successors, (280), 2 states have call predecessors, (280), 1 states have return successors, (280), 1 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 02:59:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:48,371 INFO L93 Difference]: Finished difference Result 5546 states and 9464 transitions. [2024-11-28 02:59:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:59:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 476.5) internal successors, (953), 2 states have internal predecessors, (953), 2 states have call successors, (280), 2 states have call predecessors, (280), 1 states have return successors, (280), 1 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2348 [2024-11-28 02:59:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:48,417 INFO L225 Difference]: With dead ends: 5546 [2024-11-28 02:59:48,417 INFO L226 Difference]: Without dead ends: 2773 [2024-11-28 02:59:48,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2349 GetRequests, 2349 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:59:48,441 INFO L435 NwaCegarLoop]: 4591 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, 4591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:48,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:59:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2024-11-28 02:59:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2773. [2024-11-28 02:59:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2773 states, 2491 states have (on average 1.6182256122039342) internal successors, (4031), 2491 states have internal predecessors, (4031), 280 states have call successors, (280), 1 states have call predecessors, (280), 1 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-28 02:59:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 4591 transitions. [2024-11-28 02:59:48,781 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 4591 transitions. Word has length 2348 [2024-11-28 02:59:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:48,785 INFO L471 AbstractCegarLoop]: Abstraction has 2773 states and 4591 transitions. [2024-11-28 02:59:48,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 476.5) internal successors, (953), 2 states have internal predecessors, (953), 2 states have call successors, (280), 2 states have call predecessors, (280), 1 states have return successors, (280), 1 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 02:59:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 4591 transitions. [2024-11-28 02:59:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2349 [2024-11-28 02:59:48,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:48,878 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:48,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:49,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:59:49,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:49,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1280718672, now seen corresponding path program 1 times [2024-11-28 02:59:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:49,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973093918] [2024-11-28 02:59:49,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 02:59:55,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973093918] [2024-11-28 02:59:55,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973093918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:55,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773044670] [2024-11-28 02:59:55,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:55,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:55,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:55,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:55,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:59:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:57,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 5136 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:59:57,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 837 proven. 0 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 02:59:57,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773044670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:57,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 02:59:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770332105] [2024-11-28 02:59:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:57,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:57,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:57,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:59:57,564 INFO L87 Difference]: Start difference. First operand 2773 states and 4591 transitions. Second operand has 6 states, 5 states have (on average 190.8) internal successors, (954), 6 states have internal predecessors, (954), 2 states have call successors, (280), 1 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 02:59:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:59,582 INFO L93 Difference]: Finished difference Result 2785 states and 4605 transitions. [2024-11-28 02:59:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 190.8) internal successors, (954), 6 states have internal predecessors, (954), 2 states have call successors, (280), 1 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2348 [2024-11-28 02:59:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:59,604 INFO L225 Difference]: With dead ends: 2785 [2024-11-28 02:59:59,605 INFO L226 Difference]: Without dead ends: 2775 [2024-11-28 02:59:59,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2353 GetRequests, 2347 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:59:59,607 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:59,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:59:59,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2024-11-28 02:59:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2775. [2024-11-28 02:59:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2493 states have (on average 1.6177296430004011) internal successors, (4033), 2493 states have internal predecessors, (4033), 280 states have call successors, (280), 1 states have call predecessors, (280), 1 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-28 02:59:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4593 transitions. [2024-11-28 02:59:59,764 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4593 transitions. Word has length 2348 [2024-11-28 02:59:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:59,776 INFO L471 AbstractCegarLoop]: Abstraction has 2775 states and 4593 transitions. [2024-11-28 02:59:59,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 190.8) internal successors, (954), 6 states have internal predecessors, (954), 2 states have call successors, (280), 1 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 02:59:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4593 transitions. [2024-11-28 02:59:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2350 [2024-11-28 02:59:59,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:59,824 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:59,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:00,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:00,029 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:00,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1260220509, now seen corresponding path program 1 times [2024-11-28 03:00:00,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:00,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642203099] [2024-11-28 03:00:00,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642203099] [2024-11-28 03:00:03,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642203099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901748071] [2024-11-28 03:00:03,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:03,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:03,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:03,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:03,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:00:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:04,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 5139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:04,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:04,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:04,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901748071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:04,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:00:04,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842677996] [2024-11-28 03:00:04,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:04,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:04,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:04,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:04,729 INFO L87 Difference]: Start difference. First operand 2775 states and 4593 transitions. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:04,867 INFO L93 Difference]: Finished difference Result 2805 states and 4635 transitions. [2024-11-28 03:00:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:04,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2349 [2024-11-28 03:00:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:04,887 INFO L225 Difference]: With dead ends: 2805 [2024-11-28 03:00:04,887 INFO L226 Difference]: Without dead ends: 2784 [2024-11-28 03:00:04,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2354 GetRequests, 2348 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:04,891 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:04,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2024-11-28 03:00:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2784. [2024-11-28 03:00:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2502 states have (on average 1.6171063149480416) internal successors, (4046), 2502 states have internal predecessors, (4046), 280 states have call successors, (280), 1 states have call predecessors, (280), 1 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-28 03:00:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4606 transitions. [2024-11-28 03:00:05,039 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4606 transitions. Word has length 2349 [2024-11-28 03:00:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:05,047 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4606 transitions. [2024-11-28 03:00:05,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4606 transitions. [2024-11-28 03:00:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2350 [2024-11-28 03:00:05,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:05,103 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:05,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:00:05,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:05,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:05,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:05,306 INFO L85 PathProgramCache]: Analyzing trace with hash -169702601, now seen corresponding path program 1 times [2024-11-28 03:00:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:05,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543518825] [2024-11-28 03:00:05,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:05,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543518825] [2024-11-28 03:00:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543518825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427102811] [2024-11-28 03:00:08,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:08,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:08,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:08,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:08,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:00:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:09,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 5139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:09,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:09,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427102811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:09,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48438871] [2024-11-28 03:00:09,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:09,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:09,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:09,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:09,358 INFO L87 Difference]: Start difference. First operand 2784 states and 4606 transitions. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:09,450 INFO L93 Difference]: Finished difference Result 2802 states and 4628 transitions. [2024-11-28 03:00:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:09,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2349 [2024-11-28 03:00:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:09,477 INFO L225 Difference]: With dead ends: 2802 [2024-11-28 03:00:09,478 INFO L226 Difference]: Without dead ends: 2785 [2024-11-28 03:00:09,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2354 GetRequests, 2349 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:09,482 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:09,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:09,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2024-11-28 03:00:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2024-11-28 03:00:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2503 states have (on average 1.6164602477027568) internal successors, (4046), 2503 states have internal predecessors, (4046), 280 states have call successors, (280), 1 states have call predecessors, (280), 1 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-28 03:00:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4606 transitions. [2024-11-28 03:00:09,731 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4606 transitions. Word has length 2349 [2024-11-28 03:00:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:09,737 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4606 transitions. [2024-11-28 03:00:09,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4606 transitions. [2024-11-28 03:00:09,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2351 [2024-11-28 03:00:09,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:09,828 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:09,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:00:10,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:10,029 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:10,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash 145483242, now seen corresponding path program 1 times [2024-11-28 03:00:10,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:10,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52210338] [2024-11-28 03:00:10,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:12,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:12,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52210338] [2024-11-28 03:00:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52210338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:12,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55509498] [2024-11-28 03:00:12,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:12,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:12,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:12,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:12,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:00:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:13,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 5142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:13,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:17,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:17,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55509498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:17,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:17,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:17,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660643595] [2024-11-28 03:00:17,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:17,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:17,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:17,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:17,147 INFO L87 Difference]: Start difference. First operand 2785 states and 4606 transitions. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:00:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:17,370 INFO L93 Difference]: Finished difference Result 7656 states and 12668 transitions. [2024-11-28 03:00:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2350 [2024-11-28 03:00:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:17,398 INFO L225 Difference]: With dead ends: 7656 [2024-11-28 03:00:17,398 INFO L226 Difference]: Without dead ends: 5212 [2024-11-28 03:00:17,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2355 GetRequests, 2350 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:17,405 INFO L435 NwaCegarLoop]: 6363 mSDtfsCounter, 3066 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 10941 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:17,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 10941 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2024-11-28 03:00:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 5212. [2024-11-28 03:00:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 4861 states have (on average 1.6311458547623945) internal successors, (7929), 4861 states have internal predecessors, (7929), 349 states have call successors, (349), 1 states have call predecessors, (349), 1 states have return successors, (349), 349 states have call predecessors, (349), 349 states have call successors, (349) [2024-11-28 03:00:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 8627 transitions. [2024-11-28 03:00:17,643 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 8627 transitions. Word has length 2350 [2024-11-28 03:00:17,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:17,647 INFO L471 AbstractCegarLoop]: Abstraction has 5212 states and 8627 transitions. [2024-11-28 03:00:17,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:00:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 8627 transitions. [2024-11-28 03:00:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2351 [2024-11-28 03:00:17,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:17,695 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:17,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:00:17,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:17,897 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:17,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 221678070, now seen corresponding path program 1 times [2024-11-28 03:00:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278331628] [2024-11-28 03:00:17,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278331628] [2024-11-28 03:00:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278331628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972895495] [2024-11-28 03:00:20,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:20,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:00:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:21,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 5142 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:21,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:21,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972895495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:21,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:00:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189239373] [2024-11-28 03:00:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:21,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:21,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:21,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:21,524 INFO L87 Difference]: Start difference. First operand 5212 states and 8627 transitions. Second operand has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:21,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:21,638 INFO L93 Difference]: Finished difference Result 5280 states and 8728 transitions. [2024-11-28 03:00:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2350 [2024-11-28 03:00:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:21,666 INFO L225 Difference]: With dead ends: 5280 [2024-11-28 03:00:21,666 INFO L226 Difference]: Without dead ends: 5229 [2024-11-28 03:00:21,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2355 GetRequests, 2349 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:21,670 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:21,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2024-11-28 03:00:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 5229. [2024-11-28 03:00:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 4878 states have (on average 1.6305863058630585) internal successors, (7954), 4878 states have internal predecessors, (7954), 349 states have call successors, (349), 1 states have call predecessors, (349), 1 states have return successors, (349), 349 states have call predecessors, (349), 349 states have call successors, (349) [2024-11-28 03:00:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 8652 transitions. [2024-11-28 03:00:21,874 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 8652 transitions. Word has length 2350 [2024-11-28 03:00:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:21,878 INFO L471 AbstractCegarLoop]: Abstraction has 5229 states and 8652 transitions. [2024-11-28 03:00:21,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 8652 transitions. [2024-11-28 03:00:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2351 [2024-11-28 03:00:21,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:21,926 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:21,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:00:22,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:00:22,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:22,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1205774288, now seen corresponding path program 1 times [2024-11-28 03:00:22,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:22,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006773279] [2024-11-28 03:00:22,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:22,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:24,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:24,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006773279] [2024-11-28 03:00:24,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006773279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:24,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608383303] [2024-11-28 03:00:24,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:24,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:24,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:24,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:00:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:25,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 5142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:25,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:25,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608383303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:25,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:25,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278488080] [2024-11-28 03:00:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:25,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:25,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:25,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:25,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:25,561 INFO L87 Difference]: Start difference. First operand 5229 states and 8652 transitions. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:25,735 INFO L93 Difference]: Finished difference Result 5260 states and 8693 transitions. [2024-11-28 03:00:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2350 [2024-11-28 03:00:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:25,772 INFO L225 Difference]: With dead ends: 5260 [2024-11-28 03:00:25,773 INFO L226 Difference]: Without dead ends: 5222 [2024-11-28 03:00:25,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2355 GetRequests, 2350 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:25,776 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:25,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2024-11-28 03:00:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5222. [2024-11-28 03:00:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 4871 states have (on average 1.6300554300964893) internal successors, (7940), 4871 states have internal predecessors, (7940), 349 states have call successors, (349), 1 states have call predecessors, (349), 1 states have return successors, (349), 349 states have call predecessors, (349), 349 states have call successors, (349) [2024-11-28 03:00:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 8638 transitions. [2024-11-28 03:00:26,040 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 8638 transitions. Word has length 2350 [2024-11-28 03:00:26,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:26,044 INFO L471 AbstractCegarLoop]: Abstraction has 5222 states and 8638 transitions. [2024-11-28 03:00:26,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:26,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 8638 transitions. [2024-11-28 03:00:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2352 [2024-11-28 03:00:26,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:26,156 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:26,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:00:26,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:00:26,358 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:26,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -878826461, now seen corresponding path program 1 times [2024-11-28 03:00:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:26,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675441419] [2024-11-28 03:00:26,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675441419] [2024-11-28 03:00:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675441419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886911942] [2024-11-28 03:00:28,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:28,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:28,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:28,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:28,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:00:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:29,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 5145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:29,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:29,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886911942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:29,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:29,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804222743] [2024-11-28 03:00:29,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:29,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:29,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:29,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:29,673 INFO L87 Difference]: Start difference. First operand 5222 states and 8638 transitions. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:29,739 INFO L93 Difference]: Finished difference Result 5286 states and 8730 transitions. [2024-11-28 03:00:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:29,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2351 [2024-11-28 03:00:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:29,766 INFO L225 Difference]: With dead ends: 5286 [2024-11-28 03:00:29,766 INFO L226 Difference]: Without dead ends: 5236 [2024-11-28 03:00:29,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2356 GetRequests, 2351 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:29,770 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 8 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9172 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:29,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9172 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2024-11-28 03:00:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 5236. [2024-11-28 03:00:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 4885 states have (on average 1.6296827021494371) internal successors, (7961), 4885 states have internal predecessors, (7961), 349 states have call successors, (349), 1 states have call predecessors, (349), 1 states have return successors, (349), 349 states have call predecessors, (349), 349 states have call successors, (349) [2024-11-28 03:00:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 8659 transitions. [2024-11-28 03:00:30,163 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 8659 transitions. Word has length 2351 [2024-11-28 03:00:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:30,166 INFO L471 AbstractCegarLoop]: Abstraction has 5236 states and 8659 transitions. [2024-11-28 03:00:30,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 8659 transitions. [2024-11-28 03:00:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2352 [2024-11-28 03:00:30,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:30,225 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:30,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:00:30,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:00:30,429 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:30,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 341601815, now seen corresponding path program 1 times [2024-11-28 03:00:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:30,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486976337] [2024-11-28 03:00:30,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:30,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486976337] [2024-11-28 03:00:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486976337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545528578] [2024-11-28 03:00:32,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:32,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:32,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:32,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:00:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:33,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 5145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:34,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:37,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:37,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545528578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:37,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287573404] [2024-11-28 03:00:37,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:37,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:37,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:37,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:37,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:37,303 INFO L87 Difference]: Start difference. First operand 5236 states and 8659 transitions. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:00:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:37,469 INFO L93 Difference]: Finished difference Result 10118 states and 16728 transitions. [2024-11-28 03:00:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2351 [2024-11-28 03:00:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:37,492 INFO L225 Difference]: With dead ends: 10118 [2024-11-28 03:00:37,492 INFO L226 Difference]: Without dead ends: 7663 [2024-11-28 03:00:37,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2356 GetRequests, 2351 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:37,499 INFO L435 NwaCegarLoop]: 5511 mSDtfsCounter, 3069 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 10075 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:37,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3069 Valid, 10075 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2024-11-28 03:00:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 7650. [2024-11-28 03:00:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7650 states, 7230 states have (on average 1.6344398340248962) internal successors, (11817), 7230 states have internal predecessors, (11817), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:00:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 12653 transitions. [2024-11-28 03:00:37,805 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 12653 transitions. Word has length 2351 [2024-11-28 03:00:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:37,812 INFO L471 AbstractCegarLoop]: Abstraction has 7650 states and 12653 transitions. [2024-11-28 03:00:37,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:00:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 12653 transitions. [2024-11-28 03:00:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2352 [2024-11-28 03:00:37,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:37,865 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:37,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:00:38,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:38,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:38,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 384814333, now seen corresponding path program 1 times [2024-11-28 03:00:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020971579] [2024-11-28 03:00:38,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020971579] [2024-11-28 03:00:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020971579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883994178] [2024-11-28 03:00:40,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:40,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:40,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:40,441 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:40,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:00:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:41,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 5145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:41,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:00:41,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:41,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883994178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:41,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:41,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:41,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491146699] [2024-11-28 03:00:41,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:41,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:41,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:41,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:41,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:41,537 INFO L87 Difference]: Start difference. First operand 7650 states and 12653 transitions. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:41,624 INFO L93 Difference]: Finished difference Result 7705 states and 12727 transitions. [2024-11-28 03:00:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2351 [2024-11-28 03:00:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:41,648 INFO L225 Difference]: With dead ends: 7705 [2024-11-28 03:00:41,648 INFO L226 Difference]: Without dead ends: 7635 [2024-11-28 03:00:41,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2356 GetRequests, 2351 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:41,652 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:41,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2024-11-28 03:00:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7635. [2024-11-28 03:00:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7635 states, 7215 states have (on average 1.633957033957034) internal successors, (11789), 7215 states have internal predecessors, (11789), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:00:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7635 states to 7635 states and 12625 transitions. [2024-11-28 03:00:41,879 INFO L78 Accepts]: Start accepts. Automaton has 7635 states and 12625 transitions. Word has length 2351 [2024-11-28 03:00:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:41,882 INFO L471 AbstractCegarLoop]: Abstraction has 7635 states and 12625 transitions. [2024-11-28 03:00:41,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7635 states and 12625 transitions. [2024-11-28 03:00:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2352 [2024-11-28 03:00:41,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:41,933 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:41,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:00:42,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:42,134 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:42,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1506346335, now seen corresponding path program 1 times [2024-11-28 03:00:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166660265] [2024-11-28 03:00:42,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166660265] [2024-11-28 03:00:45,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166660265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508842552] [2024-11-28 03:00:45,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:45,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:45,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:45,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:45,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:00:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:46,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 5145 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:00:46,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1950 proven. 0 refuted. 0 times theorem prover too weak. 154290 trivial. 0 not checked. [2024-11-28 03:00:46,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:46,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508842552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:46,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:46,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:00:46,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966535669] [2024-11-28 03:00:46,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:46,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:00:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:46,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:00:46,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:46,315 INFO L87 Difference]: Start difference. First operand 7635 states and 12625 transitions. Second operand has 6 states, 5 states have (on average 192.0) internal successors, (960), 6 states have internal predecessors, (960), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:00:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:48,002 INFO L93 Difference]: Finished difference Result 7755 states and 12797 transitions. [2024-11-28 03:00:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:00:48,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 192.0) internal successors, (960), 6 states have internal predecessors, (960), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2351 [2024-11-28 03:00:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:48,025 INFO L225 Difference]: With dead ends: 7755 [2024-11-28 03:00:48,025 INFO L226 Difference]: Without dead ends: 7641 [2024-11-28 03:00:48,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2356 GetRequests, 2350 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:48,029 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:48,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:00:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7641 states. [2024-11-28 03:00:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7641 to 7641. [2024-11-28 03:00:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7641 states, 7221 states have (on average 1.6334302728153995) internal successors, (11795), 7221 states have internal predecessors, (11795), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:00:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7641 states to 7641 states and 12631 transitions. [2024-11-28 03:00:48,237 INFO L78 Accepts]: Start accepts. Automaton has 7641 states and 12631 transitions. Word has length 2351 [2024-11-28 03:00:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:48,240 INFO L471 AbstractCegarLoop]: Abstraction has 7641 states and 12631 transitions. [2024-11-28 03:00:48,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 192.0) internal successors, (960), 6 states have internal predecessors, (960), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:00:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7641 states and 12631 transitions. [2024-11-28 03:00:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2353 [2024-11-28 03:00:48,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:48,342 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:48,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:00:48,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:48,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:48,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1549955730, now seen corresponding path program 1 times [2024-11-28 03:00:48,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:48,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541029213] [2024-11-28 03:00:48,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:48,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541029213] [2024-11-28 03:00:50,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541029213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807949064] [2024-11-28 03:00:50,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:50,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:50,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:50,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:50,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:00:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:51,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 5148 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:51,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 2224 proven. 0 refuted. 0 times theorem prover too weak. 154016 trivial. 0 not checked. [2024-11-28 03:00:51,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807949064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:51,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:00:51,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966050985] [2024-11-28 03:00:51,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:51,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:51,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:51,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:51,975 INFO L87 Difference]: Start difference. First operand 7641 states and 12631 transitions. Second operand has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:52,077 INFO L93 Difference]: Finished difference Result 7815 states and 12887 transitions. [2024-11-28 03:00:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:52,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2352 [2024-11-28 03:00:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:52,097 INFO L225 Difference]: With dead ends: 7815 [2024-11-28 03:00:52,097 INFO L226 Difference]: Without dead ends: 7668 [2024-11-28 03:00:52,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2357 GetRequests, 2351 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:52,102 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:52,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2024-11-28 03:00:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 7668. [2024-11-28 03:00:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7668 states, 7248 states have (on average 1.6327262693156732) internal successors, (11834), 7248 states have internal predecessors, (11834), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:00:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 12670 transitions. [2024-11-28 03:00:52,305 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 12670 transitions. Word has length 2352 [2024-11-28 03:00:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:52,308 INFO L471 AbstractCegarLoop]: Abstraction has 7668 states and 12670 transitions. [2024-11-28 03:00:52,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 12670 transitions. [2024-11-28 03:00:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2353 [2024-11-28 03:00:52,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:52,354 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:52,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:00:52,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:00:52,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:52,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash 420717944, now seen corresponding path program 1 times [2024-11-28 03:00:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:52,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404806703] [2024-11-28 03:00:52,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:52,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:55,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:55,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404806703] [2024-11-28 03:00:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404806703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316237362] [2024-11-28 03:00:55,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:55,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:55,264 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:55,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:00:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:56,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 5148 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:00:56,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 2224 proven. 0 refuted. 0 times theorem prover too weak. 154016 trivial. 0 not checked. [2024-11-28 03:00:56,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:56,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316237362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:56,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:00:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423057239] [2024-11-28 03:00:56,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:56,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:56,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:56,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:56,464 INFO L87 Difference]: Start difference. First operand 7668 states and 12670 transitions. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:56,588 INFO L93 Difference]: Finished difference Result 7806 states and 12866 transitions. [2024-11-28 03:00:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:56,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2352 [2024-11-28 03:00:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:56,636 INFO L225 Difference]: With dead ends: 7806 [2024-11-28 03:00:56,636 INFO L226 Difference]: Without dead ends: 7671 [2024-11-28 03:00:56,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2357 GetRequests, 2352 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:00:56,643 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:56,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7671 states. [2024-11-28 03:00:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7671 to 7671. [2024-11-28 03:00:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7671 states, 7251 states have (on average 1.632050751620466) internal successors, (11834), 7251 states have internal predecessors, (11834), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:00:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7671 states to 7671 states and 12670 transitions. [2024-11-28 03:00:57,228 INFO L78 Accepts]: Start accepts. Automaton has 7671 states and 12670 transitions. Word has length 2352 [2024-11-28 03:00:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:57,232 INFO L471 AbstractCegarLoop]: Abstraction has 7671 states and 12670 transitions. [2024-11-28 03:00:57,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:00:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7671 states and 12670 transitions. [2024-11-28 03:00:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2354 [2024-11-28 03:00:57,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:57,298 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:57,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:00:57,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:57,499 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:57,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1459381991, now seen corresponding path program 1 times [2024-11-28 03:00:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620794979] [2024-11-28 03:00:57,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:00:59,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620794979] [2024-11-28 03:00:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620794979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409586142] [2024-11-28 03:00:59,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:59,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:59,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:59,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:01:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:00,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 5151 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:01:00,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3055 proven. 0 refuted. 0 times theorem prover too weak. 153185 trivial. 0 not checked. [2024-11-28 03:01:00,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:00,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409586142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:00,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:01:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498145756] [2024-11-28 03:01:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:00,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:01:00,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:00,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:01:00,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:00,975 INFO L87 Difference]: Start difference. First operand 7671 states and 12670 transitions. Second operand has 6 states, 5 states have (on average 192.4) internal successors, (962), 6 states have internal predecessors, (962), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:02,699 INFO L93 Difference]: Finished difference Result 7932 states and 13061 transitions. [2024-11-28 03:01:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:01:02,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 192.4) internal successors, (962), 6 states have internal predecessors, (962), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2353 [2024-11-28 03:01:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:02,720 INFO L225 Difference]: With dead ends: 7932 [2024-11-28 03:01:02,720 INFO L226 Difference]: Without dead ends: 7677 [2024-11-28 03:01:02,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2358 GetRequests, 2352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:02,724 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:02,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:01:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7677 states. [2024-11-28 03:01:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7677 to 7677. [2024-11-28 03:01:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 7257 states have (on average 1.6315281796885766) internal successors, (11840), 7257 states have internal predecessors, (11840), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:01:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 12676 transitions. [2024-11-28 03:01:02,922 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 12676 transitions. Word has length 2353 [2024-11-28 03:01:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:02,925 INFO L471 AbstractCegarLoop]: Abstraction has 7677 states and 12676 transitions. [2024-11-28 03:01:02,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 192.4) internal successors, (962), 6 states have internal predecessors, (962), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 12676 transitions. [2024-11-28 03:01:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2355 [2024-11-28 03:01:02,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:02,970 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:02,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:03,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:03,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:03,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash 863507044, now seen corresponding path program 1 times [2024-11-28 03:01:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319635555] [2024-11-28 03:01:03,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319635555] [2024-11-28 03:01:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319635555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430055485] [2024-11-28 03:01:05,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:05,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:05,435 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:05,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:01:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:06,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 5154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:06,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 152916 trivial. 0 not checked. [2024-11-28 03:01:06,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:06,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430055485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:06,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:01:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547227317] [2024-11-28 03:01:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:06,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:06,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:06,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:06,695 INFO L87 Difference]: Start difference. First operand 7677 states and 12676 transitions. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:06,755 INFO L93 Difference]: Finished difference Result 7944 states and 13076 transitions. [2024-11-28 03:01:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2354 [2024-11-28 03:01:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:06,771 INFO L225 Difference]: With dead ends: 7944 [2024-11-28 03:01:06,771 INFO L226 Difference]: Without dead ends: 7680 [2024-11-28 03:01:06,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2354 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:06,775 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:06,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7680 states. [2024-11-28 03:01:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7680 to 7680. [2024-11-28 03:01:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7260 states have (on average 1.631267217630854) internal successors, (11843), 7260 states have internal predecessors, (11843), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:01:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 12679 transitions. [2024-11-28 03:01:06,971 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 12679 transitions. Word has length 2354 [2024-11-28 03:01:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:06,973 INFO L471 AbstractCegarLoop]: Abstraction has 7680 states and 12679 transitions. [2024-11-28 03:01:06,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 12679 transitions. [2024-11-28 03:01:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2355 [2024-11-28 03:01:07,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:07,104 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:07,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:01:07,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:01:07,305 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:07,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2138838262, now seen corresponding path program 1 times [2024-11-28 03:01:07,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:07,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579370747] [2024-11-28 03:01:07,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:07,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:09,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579370747] [2024-11-28 03:01:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579370747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:09,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060628871] [2024-11-28 03:01:09,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:09,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:09,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:09,766 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:09,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:01:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:10,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 5154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:01:10,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 152916 trivial. 0 not checked. [2024-11-28 03:01:10,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060628871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:10,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:01:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275909184] [2024-11-28 03:01:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:10,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:10,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:10,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:10,896 INFO L87 Difference]: Start difference. First operand 7680 states and 12679 transitions. Second operand has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:10,994 INFO L93 Difference]: Finished difference Result 8001 states and 13160 transitions. [2024-11-28 03:01:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2354 [2024-11-28 03:01:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:11,009 INFO L225 Difference]: With dead ends: 8001 [2024-11-28 03:01:11,009 INFO L226 Difference]: Without dead ends: 7707 [2024-11-28 03:01:11,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2353 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:11,014 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:11,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:11,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7707 states. [2024-11-28 03:01:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7707 to 7707. [2024-11-28 03:01:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 7287 states have (on average 1.6301633045148896) internal successors, (11879), 7287 states have internal predecessors, (11879), 418 states have call successors, (418), 1 states have call predecessors, (418), 1 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2024-11-28 03:01:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 12715 transitions. [2024-11-28 03:01:11,212 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 12715 transitions. Word has length 2354 [2024-11-28 03:01:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:11,215 INFO L471 AbstractCegarLoop]: Abstraction has 7707 states and 12715 transitions. [2024-11-28 03:01:11,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 12715 transitions. [2024-11-28 03:01:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2356 [2024-11-28 03:01:11,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:11,262 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:11,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:11,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:01:11,463 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:11,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1392930975, now seen corresponding path program 1 times [2024-11-28 03:01:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115465672] [2024-11-28 03:01:11,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:13,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:13,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115465672] [2024-11-28 03:01:13,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115465672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:13,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892997715] [2024-11-28 03:01:13,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:13,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:13,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:13,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:13,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:01:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:15,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 5157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:15,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:01:15,190 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:15,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892997715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:15,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:15,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:01:15,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756014575] [2024-11-28 03:01:15,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:15,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:15,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:15,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:15,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:15,195 INFO L87 Difference]: Start difference. First operand 7707 states and 12715 transitions. Second operand has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:15,531 INFO L93 Difference]: Finished difference Result 15503 states and 25549 transitions. [2024-11-28 03:01:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2355 [2024-11-28 03:01:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:15,552 INFO L225 Difference]: With dead ends: 15503 [2024-11-28 03:01:15,552 INFO L226 Difference]: Without dead ends: 15113 [2024-11-28 03:01:15,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2354 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:15,559 INFO L435 NwaCegarLoop]: 6522 mSDtfsCounter, 4769 mSDsluCounter, 6462 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4837 SdHoareTripleChecker+Valid, 12984 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:15,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4837 Valid, 12984 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:01:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15113 states. [2024-11-28 03:01:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15113 to 13766. [2024-11-28 03:01:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13766 states, 13172 states have (on average 1.6367294260552687) internal successors, (21559), 13172 states have internal predecessors, (21559), 592 states have call successors, (592), 1 states have call predecessors, (592), 1 states have return successors, (592), 592 states have call predecessors, (592), 592 states have call successors, (592) [2024-11-28 03:01:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13766 states to 13766 states and 22743 transitions. [2024-11-28 03:01:15,883 INFO L78 Accepts]: Start accepts. Automaton has 13766 states and 22743 transitions. Word has length 2355 [2024-11-28 03:01:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:15,886 INFO L471 AbstractCegarLoop]: Abstraction has 13766 states and 22743 transitions. [2024-11-28 03:01:15,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13766 states and 22743 transitions. [2024-11-28 03:01:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2356 [2024-11-28 03:01:15,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:15,938 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:15,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:16,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:01:16,139 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:16,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 74762861, now seen corresponding path program 1 times [2024-11-28 03:01:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655139321] [2024-11-28 03:01:16,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655139321] [2024-11-28 03:01:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655139321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696248806] [2024-11-28 03:01:18,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:18,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:18,521 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:18,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:01:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:19,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 5157 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:01:19,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 152916 trivial. 0 not checked. [2024-11-28 03:01:19,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696248806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:19,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:01:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216372246] [2024-11-28 03:01:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:19,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:19,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:19,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:19,590 INFO L87 Difference]: Start difference. First operand 13766 states and 22743 transitions. Second operand has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:19,685 INFO L93 Difference]: Finished difference Result 14267 states and 23510 transitions. [2024-11-28 03:01:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2355 [2024-11-28 03:01:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:19,703 INFO L225 Difference]: With dead ends: 14267 [2024-11-28 03:01:19,704 INFO L226 Difference]: Without dead ends: 13810 [2024-11-28 03:01:19,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2354 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:19,710 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:19,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13810 states. [2024-11-28 03:01:20,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13810 to 13807. [2024-11-28 03:01:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13807 states, 13213 states have (on average 1.6364186785741315) internal successors, (21622), 13213 states have internal predecessors, (21622), 592 states have call successors, (592), 1 states have call predecessors, (592), 1 states have return successors, (592), 592 states have call predecessors, (592), 592 states have call successors, (592) [2024-11-28 03:01:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13807 states to 13807 states and 22806 transitions. [2024-11-28 03:01:20,043 INFO L78 Accepts]: Start accepts. Automaton has 13807 states and 22806 transitions. Word has length 2355 [2024-11-28 03:01:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:20,046 INFO L471 AbstractCegarLoop]: Abstraction has 13807 states and 22806 transitions. [2024-11-28 03:01:20,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 13807 states and 22806 transitions. [2024-11-28 03:01:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2356 [2024-11-28 03:01:20,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:20,101 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:20,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:01:20,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:01:20,302 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:20,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1207022791, now seen corresponding path program 1 times [2024-11-28 03:01:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46298109] [2024-11-28 03:01:20,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46298109] [2024-11-28 03:01:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46298109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375029874] [2024-11-28 03:01:22,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:22,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:22,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:22,667 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:01:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:23,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 5157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:23,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 152916 trivial. 0 not checked. [2024-11-28 03:01:23,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:23,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375029874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:23,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:23,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:01:23,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299586335] [2024-11-28 03:01:23,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:23,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:23,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:23,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:23,799 INFO L87 Difference]: Start difference. First operand 13807 states and 22806 transitions. Second operand has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:23,902 INFO L93 Difference]: Finished difference Result 14216 states and 23420 transitions. [2024-11-28 03:01:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:23,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2355 [2024-11-28 03:01:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:23,923 INFO L225 Difference]: With dead ends: 14216 [2024-11-28 03:01:23,923 INFO L226 Difference]: Without dead ends: 13787 [2024-11-28 03:01:23,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2355 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:23,929 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:23,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13787 states. [2024-11-28 03:01:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13787 to 13781. [2024-11-28 03:01:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13781 states, 13187 states have (on average 1.636080988852658) internal successors, (21575), 13187 states have internal predecessors, (21575), 592 states have call successors, (592), 1 states have call predecessors, (592), 1 states have return successors, (592), 592 states have call predecessors, (592), 592 states have call successors, (592) [2024-11-28 03:01:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13781 states to 13781 states and 22759 transitions. [2024-11-28 03:01:24,245 INFO L78 Accepts]: Start accepts. Automaton has 13781 states and 22759 transitions. Word has length 2355 [2024-11-28 03:01:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:24,247 INFO L471 AbstractCegarLoop]: Abstraction has 13781 states and 22759 transitions. [2024-11-28 03:01:24,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 13781 states and 22759 transitions. [2024-11-28 03:01:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2357 [2024-11-28 03:01:24,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:24,301 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:24,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:01:24,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:24,502 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:24,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -220957328, now seen corresponding path program 1 times [2024-11-28 03:01:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383137949] [2024-11-28 03:01:24,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:27,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383137949] [2024-11-28 03:01:27,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383137949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:27,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256158760] [2024-11-28 03:01:27,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:27,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:27,111 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:27,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:01:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:28,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 5160 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:28,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 155124 trivial. 0 not checked. [2024-11-28 03:01:31,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256158760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:01:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092438806] [2024-11-28 03:01:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:31,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:31,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:31,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:31,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:31,037 INFO L87 Difference]: Start difference. First operand 13781 states and 22759 transitions. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:31,204 INFO L93 Difference]: Finished difference Result 23607 states and 38973 transitions. [2024-11-28 03:01:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2356 [2024-11-28 03:01:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:31,228 INFO L225 Difference]: With dead ends: 23607 [2024-11-28 03:01:31,228 INFO L226 Difference]: Without dead ends: 17393 [2024-11-28 03:01:31,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:31,241 INFO L435 NwaCegarLoop]: 5729 mSDtfsCounter, 3066 mSDsluCounter, 4561 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 10290 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:31,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 10290 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:01:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2024-11-28 03:01:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 17376. [2024-11-28 03:01:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 16679 states have (on average 1.6366688650398704) internal successors, (27298), 16679 states have internal predecessors, (27298), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:01:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 28688 transitions. [2024-11-28 03:01:31,682 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 28688 transitions. Word has length 2356 [2024-11-28 03:01:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:31,684 INFO L471 AbstractCegarLoop]: Abstraction has 17376 states and 28688 transitions. [2024-11-28 03:01:31,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 3 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 28688 transitions. [2024-11-28 03:01:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2357 [2024-11-28 03:01:31,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:31,768 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:31,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:01:31,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:31,979 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:31,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash 674739088, now seen corresponding path program 1 times [2024-11-28 03:01:31,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:31,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905365829] [2024-11-28 03:01:31,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:31,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905365829] [2024-11-28 03:01:34,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905365829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:34,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091558164] [2024-11-28 03:01:34,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:34,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:34,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:34,214 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:01:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:35,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 5160 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:35,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 152916 trivial. 0 not checked. [2024-11-28 03:01:35,255 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:35,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091558164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:35,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:01:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908054249] [2024-11-28 03:01:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:35,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:35,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:35,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:35,258 INFO L87 Difference]: Start difference. First operand 17376 states and 28688 transitions. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:35,400 INFO L93 Difference]: Finished difference Result 17941 states and 29525 transitions. [2024-11-28 03:01:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:35,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2356 [2024-11-28 03:01:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:35,426 INFO L225 Difference]: With dead ends: 17941 [2024-11-28 03:01:35,426 INFO L226 Difference]: Without dead ends: 17422 [2024-11-28 03:01:35,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:35,433 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 8 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9172 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:35,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9172 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17422 states. [2024-11-28 03:01:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17422 to 17420. [2024-11-28 03:01:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17420 states, 16723 states have (on average 1.6360700831190575) internal successors, (27360), 16723 states have internal predecessors, (27360), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:01:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17420 states to 17420 states and 28750 transitions. [2024-11-28 03:01:35,974 INFO L78 Accepts]: Start accepts. Automaton has 17420 states and 28750 transitions. Word has length 2356 [2024-11-28 03:01:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:35,976 INFO L471 AbstractCegarLoop]: Abstraction has 17420 states and 28750 transitions. [2024-11-28 03:01:35,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 17420 states and 28750 transitions. [2024-11-28 03:01:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2357 [2024-11-28 03:01:36,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:36,034 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:36,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:01:36,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:36,234 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:36,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash 874766570, now seen corresponding path program 1 times [2024-11-28 03:01:36,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:36,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157261788] [2024-11-28 03:01:36,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:38,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157261788] [2024-11-28 03:01:38,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157261788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381917550] [2024-11-28 03:01:38,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:38,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:38,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:38,202 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:38,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:01:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:39,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 5160 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:39,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 152916 trivial. 0 not checked. [2024-11-28 03:01:39,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:39,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381917550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:39,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:39,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:01:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61672852] [2024-11-28 03:01:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:39,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:39,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:39,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:39,350 INFO L87 Difference]: Start difference. First operand 17420 states and 28750 transitions. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:39,496 INFO L93 Difference]: Finished difference Result 17959 states and 29547 transitions. [2024-11-28 03:01:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:39,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2356 [2024-11-28 03:01:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:39,538 INFO L225 Difference]: With dead ends: 17959 [2024-11-28 03:01:39,538 INFO L226 Difference]: Without dead ends: 17408 [2024-11-28 03:01:39,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:39,553 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:39,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17408 states. [2024-11-28 03:01:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17408 to 17404. [2024-11-28 03:01:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 16707 states have (on average 1.6357215538397079) internal successors, (27328), 16707 states have internal predecessors, (27328), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:01:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 28718 transitions. [2024-11-28 03:01:40,193 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 28718 transitions. Word has length 2356 [2024-11-28 03:01:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:40,195 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 28718 transitions. [2024-11-28 03:01:40,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 28718 transitions. [2024-11-28 03:01:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2357 [2024-11-28 03:01:40,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:40,280 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:40,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:01:40,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:01:40,481 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:40,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 398635418, now seen corresponding path program 1 times [2024-11-28 03:01:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:40,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89215935] [2024-11-28 03:01:40,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:40,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:43,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:43,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89215935] [2024-11-28 03:01:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89215935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:43,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475503267] [2024-11-28 03:01:43,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:43,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:43,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:43,067 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:01:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:44,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 5160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:01:44,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 4152 proven. 0 refuted. 0 times theorem prover too weak. 152088 trivial. 0 not checked. [2024-11-28 03:01:44,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475503267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:44,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:01:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146771803] [2024-11-28 03:01:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:44,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:01:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:44,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:01:44,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:44,363 INFO L87 Difference]: Start difference. First operand 17404 states and 28718 transitions. Second operand has 6 states, 5 states have (on average 193.0) internal successors, (965), 6 states have internal predecessors, (965), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:46,079 INFO L93 Difference]: Finished difference Result 18123 states and 29791 transitions. [2024-11-28 03:01:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:01:46,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 193.0) internal successors, (965), 6 states have internal predecessors, (965), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2356 [2024-11-28 03:01:46,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:46,111 INFO L225 Difference]: With dead ends: 18123 [2024-11-28 03:01:46,111 INFO L226 Difference]: Without dead ends: 17424 [2024-11-28 03:01:46,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2355 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:46,120 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:46,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:01:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17424 states. [2024-11-28 03:01:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17424 to 17424. [2024-11-28 03:01:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17424 states, 16727 states have (on average 1.634961439588689) internal successors, (27348), 16727 states have internal predecessors, (27348), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:01:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17424 states to 17424 states and 28738 transitions. [2024-11-28 03:01:46,679 INFO L78 Accepts]: Start accepts. Automaton has 17424 states and 28738 transitions. Word has length 2356 [2024-11-28 03:01:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:46,682 INFO L471 AbstractCegarLoop]: Abstraction has 17424 states and 28738 transitions. [2024-11-28 03:01:46,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 193.0) internal successors, (965), 6 states have internal predecessors, (965), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:01:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 17424 states and 28738 transitions. [2024-11-28 03:01:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2358 [2024-11-28 03:01:46,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:46,747 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:46,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:46,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:01:46,948 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:46,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash 982972121, now seen corresponding path program 1 times [2024-11-28 03:01:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:46,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460284322] [2024-11-28 03:01:46,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:46,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:49,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460284322] [2024-11-28 03:01:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460284322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733273943] [2024-11-28 03:01:49,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:49,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:49,399 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:49,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:01:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:50,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 5163 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:01:50,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 4416 proven. 0 refuted. 0 times theorem prover too weak. 151824 trivial. 0 not checked. [2024-11-28 03:01:50,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733273943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:50,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:01:50,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52130267] [2024-11-28 03:01:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:50,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:50,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:50,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:50,516 INFO L87 Difference]: Start difference. First operand 17424 states and 28738 transitions. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:50,739 INFO L93 Difference]: Finished difference Result 18323 states and 30091 transitions. [2024-11-28 03:01:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2357 [2024-11-28 03:01:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:50,780 INFO L225 Difference]: With dead ends: 18323 [2024-11-28 03:01:50,780 INFO L226 Difference]: Without dead ends: 17514 [2024-11-28 03:01:50,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2362 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:50,795 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:50,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17514 states. [2024-11-28 03:01:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17514 to 17514. [2024-11-28 03:01:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17514 states, 16817 states have (on average 1.6339418445620504) internal successors, (27478), 16817 states have internal predecessors, (27478), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:01:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17514 states to 17514 states and 28868 transitions. [2024-11-28 03:01:51,212 INFO L78 Accepts]: Start accepts. Automaton has 17514 states and 28868 transitions. Word has length 2357 [2024-11-28 03:01:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:51,214 INFO L471 AbstractCegarLoop]: Abstraction has 17514 states and 28868 transitions. [2024-11-28 03:01:51,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17514 states and 28868 transitions. [2024-11-28 03:01:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2358 [2024-11-28 03:01:51,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:51,273 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:51,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:51,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:01:51,474 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:51,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1497895629, now seen corresponding path program 1 times [2024-11-28 03:01:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833741900] [2024-11-28 03:01:51,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:53,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:53,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833741900] [2024-11-28 03:01:53,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833741900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:53,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133142827] [2024-11-28 03:01:53,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:53,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:53,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:53,484 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:53,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:01:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:54,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 5163 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:01:54,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 4416 proven. 0 refuted. 0 times theorem prover too weak. 151824 trivial. 0 not checked. [2024-11-28 03:01:54,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:54,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133142827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:54,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:54,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:01:54,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364606615] [2024-11-28 03:01:54,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:54,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:54,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:54,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:54,731 INFO L87 Difference]: Start difference. First operand 17514 states and 28868 transitions. Second operand has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:54,873 INFO L93 Difference]: Finished difference Result 18293 states and 30021 transitions. [2024-11-28 03:01:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:54,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2357 [2024-11-28 03:01:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:54,900 INFO L225 Difference]: With dead ends: 18293 [2024-11-28 03:01:54,900 INFO L226 Difference]: Without dead ends: 17524 [2024-11-28 03:01:54,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2362 GetRequests, 2357 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:01:54,907 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:54,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:01:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17524 states. [2024-11-28 03:01:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17524 to 17524. [2024-11-28 03:01:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17524 states, 16827 states have (on average 1.6329708207048197) internal successors, (27478), 16827 states have internal predecessors, (27478), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:01:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17524 states to 17524 states and 28868 transitions. [2024-11-28 03:01:55,343 INFO L78 Accepts]: Start accepts. Automaton has 17524 states and 28868 transitions. Word has length 2357 [2024-11-28 03:01:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:55,346 INFO L471 AbstractCegarLoop]: Abstraction has 17524 states and 28868 transitions. [2024-11-28 03:01:55,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:01:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 17524 states and 28868 transitions. [2024-11-28 03:01:55,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2359 [2024-11-28 03:01:55,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:55,470 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:55,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 03:01:55,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:01:55,672 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:55,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash -567874412, now seen corresponding path program 1 times [2024-11-28 03:01:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:55,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913248720] [2024-11-28 03:01:55,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:01:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:57,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913248720] [2024-11-28 03:01:57,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913248720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656130559] [2024-11-28 03:01:57,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:57,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:57,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:57,807 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:57,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:01:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:58,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 5166 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:01:58,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 5241 proven. 0 refuted. 0 times theorem prover too weak. 150999 trivial. 0 not checked. [2024-11-28 03:01:58,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:01:58,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656130559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:58,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:01:58,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:01:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073361000] [2024-11-28 03:01:58,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:58,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:01:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:58,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:01:58,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:58,904 INFO L87 Difference]: Start difference. First operand 17524 states and 28868 transitions. Second operand has 6 states, 5 states have (on average 193.4) internal successors, (967), 6 states have internal predecessors, (967), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:00,431 INFO L93 Difference]: Finished difference Result 18713 states and 30671 transitions. [2024-11-28 03:02:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:00,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 193.4) internal successors, (967), 6 states have internal predecessors, (967), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2358 [2024-11-28 03:02:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:00,447 INFO L225 Difference]: With dead ends: 18713 [2024-11-28 03:02:00,447 INFO L226 Difference]: Without dead ends: 17544 [2024-11-28 03:02:00,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2363 GetRequests, 2357 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:00,451 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:00,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:02:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17544 states. [2024-11-28 03:02:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17544 to 17544. [2024-11-28 03:02:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17544 states, 16847 states have (on average 1.6322193862408738) internal successors, (27498), 16847 states have internal predecessors, (27498), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17544 states to 17544 states and 28888 transitions. [2024-11-28 03:02:00,800 INFO L78 Accepts]: Start accepts. Automaton has 17544 states and 28888 transitions. Word has length 2358 [2024-11-28 03:02:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:00,801 INFO L471 AbstractCegarLoop]: Abstraction has 17544 states and 28888 transitions. [2024-11-28 03:02:00,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 193.4) internal successors, (967), 6 states have internal predecessors, (967), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 17544 states and 28888 transitions. [2024-11-28 03:02:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2360 [2024-11-28 03:02:00,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:00,838 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:00,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:02:01,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:02:01,039 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:01,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1405967577, now seen corresponding path program 1 times [2024-11-28 03:02:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264955481] [2024-11-28 03:02:01,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:01,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:02,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264955481] [2024-11-28 03:02:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264955481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640302898] [2024-11-28 03:02:02,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:02,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:02,834 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:02:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:03,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 5169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:02:03,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 5500 proven. 0 refuted. 0 times theorem prover too weak. 150740 trivial. 0 not checked. [2024-11-28 03:02:04,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640302898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:04,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:02:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59932678] [2024-11-28 03:02:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:04,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:02:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:04,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:02:04,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:04,058 INFO L87 Difference]: Start difference. First operand 17544 states and 28888 transitions. Second operand has 4 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:04,175 INFO L93 Difference]: Finished difference Result 18913 states and 30971 transitions. [2024-11-28 03:02:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:02:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2359 [2024-11-28 03:02:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:04,193 INFO L225 Difference]: With dead ends: 18913 [2024-11-28 03:02:04,193 INFO L226 Difference]: Without dead ends: 17634 [2024-11-28 03:02:04,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2364 GetRequests, 2358 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:04,200 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:04,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17634 states. [2024-11-28 03:02:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17634 to 17634. [2024-11-28 03:02:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17634 states, 16937 states have (on average 1.6312215858770738) internal successors, (27628), 16937 states have internal predecessors, (27628), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17634 states to 17634 states and 29018 transitions. [2024-11-28 03:02:04,489 INFO L78 Accepts]: Start accepts. Automaton has 17634 states and 29018 transitions. Word has length 2359 [2024-11-28 03:02:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:04,491 INFO L471 AbstractCegarLoop]: Abstraction has 17634 states and 29018 transitions. [2024-11-28 03:02:04,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17634 states and 29018 transitions. [2024-11-28 03:02:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2360 [2024-11-28 03:02:04,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:04,551 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:04,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:02:04,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:02:04,752 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:04,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 647103551, now seen corresponding path program 1 times [2024-11-28 03:02:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225001800] [2024-11-28 03:02:04,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225001800] [2024-11-28 03:02:06,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225001800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013731203] [2024-11-28 03:02:06,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:06,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:06,776 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:06,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:02:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:07,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 5169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:02:07,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 5500 proven. 0 refuted. 0 times theorem prover too weak. 150740 trivial. 0 not checked. [2024-11-28 03:02:08,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013731203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:08,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:08,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:02:08,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236060987] [2024-11-28 03:02:08,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:08,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:08,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:08,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:08,037 INFO L87 Difference]: Start difference. First operand 17634 states and 29018 transitions. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:08,157 INFO L93 Difference]: Finished difference Result 18883 states and 30901 transitions. [2024-11-28 03:02:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2359 [2024-11-28 03:02:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:08,181 INFO L225 Difference]: With dead ends: 18883 [2024-11-28 03:02:08,181 INFO L226 Difference]: Without dead ends: 17644 [2024-11-28 03:02:08,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2364 GetRequests, 2359 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:08,187 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:08,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:08,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17644 states. [2024-11-28 03:02:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17644 to 17644. [2024-11-28 03:02:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17644 states, 16947 states have (on average 1.630259042898448) internal successors, (27628), 16947 states have internal predecessors, (27628), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17644 states to 17644 states and 29018 transitions. [2024-11-28 03:02:08,512 INFO L78 Accepts]: Start accepts. Automaton has 17644 states and 29018 transitions. Word has length 2359 [2024-11-28 03:02:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:08,514 INFO L471 AbstractCegarLoop]: Abstraction has 17644 states and 29018 transitions. [2024-11-28 03:02:08,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:08,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17644 states and 29018 transitions. [2024-11-28 03:02:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2361 [2024-11-28 03:02:08,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:08,554 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:08,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:08,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:02:08,754 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:08,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1484227660, now seen corresponding path program 1 times [2024-11-28 03:02:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575367387] [2024-11-28 03:02:08,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:10,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575367387] [2024-11-28 03:02:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575367387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:10,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705970346] [2024-11-28 03:02:10,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:10,606 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:10,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:02:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:11,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 5172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:02:11,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 5500 proven. 0 refuted. 0 times theorem prover too weak. 150740 trivial. 0 not checked. [2024-11-28 03:02:11,660 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:11,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705970346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:11,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:11,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:02:11,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090067519] [2024-11-28 03:02:11,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:11,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:11,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:11,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:11,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:11,664 INFO L87 Difference]: Start difference. First operand 17644 states and 29018 transitions. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:11,752 INFO L93 Difference]: Finished difference Result 18973 states and 31031 transitions. [2024-11-28 03:02:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:11,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2360 [2024-11-28 03:02:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:11,772 INFO L225 Difference]: With dead ends: 18973 [2024-11-28 03:02:11,772 INFO L226 Difference]: Without dead ends: 17654 [2024-11-28 03:02:11,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2365 GetRequests, 2360 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:11,779 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:11,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17654 states. [2024-11-28 03:02:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17654 to 17654. [2024-11-28 03:02:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17654 states, 16957 states have (on average 1.629887362151324) internal successors, (27638), 16957 states have internal predecessors, (27638), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17654 states to 17654 states and 29028 transitions. [2024-11-28 03:02:12,078 INFO L78 Accepts]: Start accepts. Automaton has 17654 states and 29028 transitions. Word has length 2360 [2024-11-28 03:02:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:12,080 INFO L471 AbstractCegarLoop]: Abstraction has 17654 states and 29028 transitions. [2024-11-28 03:02:12,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17654 states and 29028 transitions. [2024-11-28 03:02:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2361 [2024-11-28 03:02:12,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:12,138 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:12,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:02:12,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:02:12,339 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:12,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash 532826074, now seen corresponding path program 1 times [2024-11-28 03:02:12,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:12,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232132123] [2024-11-28 03:02:12,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232132123] [2024-11-28 03:02:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232132123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234094969] [2024-11-28 03:02:14,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:14,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:14,187 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:14,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:02:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:15,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 5172 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:02:15,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 6322 proven. 0 refuted. 0 times theorem prover too weak. 149918 trivial. 0 not checked. [2024-11-28 03:02:15,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234094969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:02:15,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055503886] [2024-11-28 03:02:15,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:15,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:02:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:15,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:02:15,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:15,294 INFO L87 Difference]: Start difference. First operand 17654 states and 29028 transitions. Second operand has 6 states, 5 states have (on average 193.8) internal successors, (969), 6 states have internal predecessors, (969), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:16,818 INFO L93 Difference]: Finished difference Result 19323 states and 31571 transitions. [2024-11-28 03:02:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:16,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 193.8) internal successors, (969), 6 states have internal predecessors, (969), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2360 [2024-11-28 03:02:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:16,838 INFO L225 Difference]: With dead ends: 19323 [2024-11-28 03:02:16,838 INFO L226 Difference]: Without dead ends: 17674 [2024-11-28 03:02:16,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2365 GetRequests, 2359 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:16,845 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:16,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:02:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17674 states. [2024-11-28 03:02:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17674 to 17674. [2024-11-28 03:02:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17674 states, 16977 states have (on average 1.6291453142486894) internal successors, (27658), 16977 states have internal predecessors, (27658), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17674 states to 17674 states and 29048 transitions. [2024-11-28 03:02:17,143 INFO L78 Accepts]: Start accepts. Automaton has 17674 states and 29048 transitions. Word has length 2360 [2024-11-28 03:02:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:17,145 INFO L471 AbstractCegarLoop]: Abstraction has 17674 states and 29048 transitions. [2024-11-28 03:02:17,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 193.8) internal successors, (969), 6 states have internal predecessors, (969), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 17674 states and 29048 transitions. [2024-11-28 03:02:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2362 [2024-11-28 03:02:17,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:17,182 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:17,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:17,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:17,383 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:17,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash 128276765, now seen corresponding path program 1 times [2024-11-28 03:02:17,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:17,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943848129] [2024-11-28 03:02:17,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:17,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:19,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943848129] [2024-11-28 03:02:19,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943848129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827054503] [2024-11-28 03:02:19,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:19,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:19,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:19,138 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:19,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:02:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:20,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 5175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:02:20,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 6576 proven. 0 refuted. 0 times theorem prover too weak. 149664 trivial. 0 not checked. [2024-11-28 03:02:20,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:20,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827054503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:20,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:20,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:02:20,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271257467] [2024-11-28 03:02:20,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:20,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:02:20,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:20,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:02:20,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:20,184 INFO L87 Difference]: Start difference. First operand 17674 states and 29048 transitions. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:20,314 INFO L93 Difference]: Finished difference Result 19523 states and 31871 transitions. [2024-11-28 03:02:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:02:20,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2361 [2024-11-28 03:02:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:20,332 INFO L225 Difference]: With dead ends: 19523 [2024-11-28 03:02:20,332 INFO L226 Difference]: Without dead ends: 17764 [2024-11-28 03:02:20,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2366 GetRequests, 2360 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:20,338 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:20,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17764 states. [2024-11-28 03:02:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17764 to 17764. [2024-11-28 03:02:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17764 states, 17067 states have (on average 1.628171324778813) internal successors, (27788), 17067 states have internal predecessors, (27788), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17764 states to 17764 states and 29178 transitions. [2024-11-28 03:02:20,654 INFO L78 Accepts]: Start accepts. Automaton has 17764 states and 29178 transitions. Word has length 2361 [2024-11-28 03:02:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:20,655 INFO L471 AbstractCegarLoop]: Abstraction has 17764 states and 29178 transitions. [2024-11-28 03:02:20,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17764 states and 29178 transitions. [2024-11-28 03:02:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2362 [2024-11-28 03:02:20,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:20,690 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:20,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:02:20,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:20,891 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:20,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -206259209, now seen corresponding path program 1 times [2024-11-28 03:02:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310040368] [2024-11-28 03:02:20,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:22,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:22,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310040368] [2024-11-28 03:02:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310040368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:22,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867457651] [2024-11-28 03:02:22,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:22,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:22,801 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:22,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:02:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:23,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 5175 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:02:23,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 6576 proven. 0 refuted. 0 times theorem prover too weak. 149664 trivial. 0 not checked. [2024-11-28 03:02:23,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:23,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867457651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:23,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:02:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351842686] [2024-11-28 03:02:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:23,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:23,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:23,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:23,825 INFO L87 Difference]: Start difference. First operand 17764 states and 29178 transitions. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:23,922 INFO L93 Difference]: Finished difference Result 19493 states and 31801 transitions. [2024-11-28 03:02:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2361 [2024-11-28 03:02:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:23,939 INFO L225 Difference]: With dead ends: 19493 [2024-11-28 03:02:23,939 INFO L226 Difference]: Without dead ends: 17774 [2024-11-28 03:02:23,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2366 GetRequests, 2361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:23,945 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:23,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17774 states. [2024-11-28 03:02:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17774 to 17774. [2024-11-28 03:02:24,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17774 states, 17077 states have (on average 1.6272178954148855) internal successors, (27788), 17077 states have internal predecessors, (27788), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17774 states to 17774 states and 29178 transitions. [2024-11-28 03:02:24,215 INFO L78 Accepts]: Start accepts. Automaton has 17774 states and 29178 transitions. Word has length 2361 [2024-11-28 03:02:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:24,216 INFO L471 AbstractCegarLoop]: Abstraction has 17774 states and 29178 transitions. [2024-11-28 03:02:24,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 17774 states and 29178 transitions. [2024-11-28 03:02:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2363 [2024-11-28 03:02:24,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:24,251 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:24,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:02:24,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:24,452 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:24,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1009590316, now seen corresponding path program 1 times [2024-11-28 03:02:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243960127] [2024-11-28 03:02:24,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243960127] [2024-11-28 03:02:26,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243960127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303387019] [2024-11-28 03:02:26,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:26,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:26,257 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:26,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:02:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:27,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 5178 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:02:27,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 7395 proven. 0 refuted. 0 times theorem prover too weak. 148845 trivial. 0 not checked. [2024-11-28 03:02:27,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:27,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303387019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:27,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:27,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:02:27,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112031983] [2024-11-28 03:02:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:27,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:02:27,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:27,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:02:27,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:27,291 INFO L87 Difference]: Start difference. First operand 17774 states and 29178 transitions. Second operand has 6 states, 5 states have (on average 194.2) internal successors, (971), 6 states have internal predecessors, (971), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:28,657 INFO L93 Difference]: Finished difference Result 19913 states and 32451 transitions. [2024-11-28 03:02:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:28,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 194.2) internal successors, (971), 6 states have internal predecessors, (971), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2362 [2024-11-28 03:02:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:28,674 INFO L225 Difference]: With dead ends: 19913 [2024-11-28 03:02:28,674 INFO L226 Difference]: Without dead ends: 17794 [2024-11-28 03:02:28,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2367 GetRequests, 2361 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:28,680 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:28,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:02:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17794 states. [2024-11-28 03:02:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17794 to 17794. [2024-11-28 03:02:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17794 states, 17097 states have (on average 1.62648417851085) internal successors, (27808), 17097 states have internal predecessors, (27808), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17794 states to 17794 states and 29198 transitions. [2024-11-28 03:02:28,924 INFO L78 Accepts]: Start accepts. Automaton has 17794 states and 29198 transitions. Word has length 2362 [2024-11-28 03:02:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:28,925 INFO L471 AbstractCegarLoop]: Abstraction has 17794 states and 29198 transitions. [2024-11-28 03:02:28,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 194.2) internal successors, (971), 6 states have internal predecessors, (971), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 17794 states and 29198 transitions. [2024-11-28 03:02:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2364 [2024-11-28 03:02:28,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:28,959 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:28,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:02:29,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:29,159 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:29,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1702196203, now seen corresponding path program 1 times [2024-11-28 03:02:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:29,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163250451] [2024-11-28 03:02:29,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163250451] [2024-11-28 03:02:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163250451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432227402] [2024-11-28 03:02:31,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:31,090 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:31,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:02:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:32,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 5181 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:02:32,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 7644 proven. 0 refuted. 0 times theorem prover too weak. 148596 trivial. 0 not checked. [2024-11-28 03:02:32,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:32,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432227402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:32,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:32,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:02:32,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993024920] [2024-11-28 03:02:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:32,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:02:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:32,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:02:32,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:32,137 INFO L87 Difference]: Start difference. First operand 17794 states and 29198 transitions. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:32,236 INFO L93 Difference]: Finished difference Result 20113 states and 32751 transitions. [2024-11-28 03:02:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:02:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2363 [2024-11-28 03:02:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:32,254 INFO L225 Difference]: With dead ends: 20113 [2024-11-28 03:02:32,254 INFO L226 Difference]: Without dead ends: 17884 [2024-11-28 03:02:32,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 2362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:32,261 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:32,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2024-11-28 03:02:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 17884. [2024-11-28 03:02:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17884 states, 17187 states have (on average 1.6255309245359866) internal successors, (27938), 17187 states have internal predecessors, (27938), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17884 states to 17884 states and 29328 transitions. [2024-11-28 03:02:32,581 INFO L78 Accepts]: Start accepts. Automaton has 17884 states and 29328 transitions. Word has length 2363 [2024-11-28 03:02:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:32,583 INFO L471 AbstractCegarLoop]: Abstraction has 17884 states and 29328 transitions. [2024-11-28 03:02:32,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 17884 states and 29328 transitions. [2024-11-28 03:02:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2364 [2024-11-28 03:02:32,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:32,627 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:32,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:02:32,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:32,827 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:32,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:32,828 INFO L85 PathProgramCache]: Analyzing trace with hash -235112709, now seen corresponding path program 1 times [2024-11-28 03:02:32,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:32,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106001856] [2024-11-28 03:02:32,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:32,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:34,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:34,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106001856] [2024-11-28 03:02:34,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106001856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:34,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198401105] [2024-11-28 03:02:34,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:34,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:34,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:34,659 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:34,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:02:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:35,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 5181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:02:35,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 7644 proven. 0 refuted. 0 times theorem prover too weak. 148596 trivial. 0 not checked. [2024-11-28 03:02:35,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198401105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:35,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:02:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546965139] [2024-11-28 03:02:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:35,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:35,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:35,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:35,707 INFO L87 Difference]: Start difference. First operand 17884 states and 29328 transitions. Second operand has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:35,790 INFO L93 Difference]: Finished difference Result 20083 states and 32681 transitions. [2024-11-28 03:02:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:35,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2363 [2024-11-28 03:02:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:35,808 INFO L225 Difference]: With dead ends: 20083 [2024-11-28 03:02:35,809 INFO L226 Difference]: Without dead ends: 17894 [2024-11-28 03:02:35,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 2363 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:35,815 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:35,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17894 states. [2024-11-28 03:02:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17894 to 17894. [2024-11-28 03:02:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17894 states, 17197 states have (on average 1.6245856835494563) internal successors, (27938), 17197 states have internal predecessors, (27938), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17894 states to 17894 states and 29328 transitions. [2024-11-28 03:02:36,082 INFO L78 Accepts]: Start accepts. Automaton has 17894 states and 29328 transitions. Word has length 2363 [2024-11-28 03:02:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:36,083 INFO L471 AbstractCegarLoop]: Abstraction has 17894 states and 29328 transitions. [2024-11-28 03:02:36,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17894 states and 29328 transitions. [2024-11-28 03:02:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2365 [2024-11-28 03:02:36,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:36,122 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:36,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:36,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:36,323 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:36,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2048063858, now seen corresponding path program 1 times [2024-11-28 03:02:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853063702] [2024-11-28 03:02:36,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853063702] [2024-11-28 03:02:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853063702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751525358] [2024-11-28 03:02:38,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:38,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:38,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:38,331 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:38,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:02:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:39,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 5184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:02:39,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 7644 proven. 0 refuted. 0 times theorem prover too weak. 148596 trivial. 0 not checked. [2024-11-28 03:02:39,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751525358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:02:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2754075] [2024-11-28 03:02:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:39,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:02:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:39,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:02:39,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:39,402 INFO L87 Difference]: Start difference. First operand 17894 states and 29328 transitions. Second operand has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:39,504 INFO L93 Difference]: Finished difference Result 20403 states and 33171 transitions. [2024-11-28 03:02:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:02:39,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2364 [2024-11-28 03:02:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:39,523 INFO L225 Difference]: With dead ends: 20403 [2024-11-28 03:02:39,523 INFO L226 Difference]: Without dead ends: 17994 [2024-11-28 03:02:39,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2369 GetRequests, 2363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:39,530 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:39,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17994 states. [2024-11-28 03:02:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17994 to 17994. [2024-11-28 03:02:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17994 states, 17297 states have (on average 1.6238654101867376) internal successors, (28088), 17297 states have internal predecessors, (28088), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17994 states to 17994 states and 29478 transitions. [2024-11-28 03:02:39,838 INFO L78 Accepts]: Start accepts. Automaton has 17994 states and 29478 transitions. Word has length 2364 [2024-11-28 03:02:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:39,839 INFO L471 AbstractCegarLoop]: Abstraction has 17994 states and 29478 transitions. [2024-11-28 03:02:39,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 17994 states and 29478 transitions. [2024-11-28 03:02:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2365 [2024-11-28 03:02:39,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:39,886 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:39,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:40,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:40,086 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:40,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:40,087 INFO L85 PathProgramCache]: Analyzing trace with hash -878146022, now seen corresponding path program 1 times [2024-11-28 03:02:40,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:40,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203366558] [2024-11-28 03:02:40,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:40,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203366558] [2024-11-28 03:02:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203366558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90595825] [2024-11-28 03:02:41,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:41,963 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:41,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:02:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:42,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 5184 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:02:42,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 8460 proven. 0 refuted. 0 times theorem prover too weak. 147780 trivial. 0 not checked. [2024-11-28 03:02:43,044 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90595825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:43,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:02:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964902510] [2024-11-28 03:02:43,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:43,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:02:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:43,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:02:43,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:43,048 INFO L87 Difference]: Start difference. First operand 17994 states and 29478 transitions. Second operand has 6 states, 5 states have (on average 194.6) internal successors, (973), 6 states have internal predecessors, (973), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:44,463 INFO L93 Difference]: Finished difference Result 20703 states and 33631 transitions. [2024-11-28 03:02:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:44,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 194.6) internal successors, (973), 6 states have internal predecessors, (973), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2364 [2024-11-28 03:02:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:44,483 INFO L225 Difference]: With dead ends: 20703 [2024-11-28 03:02:44,483 INFO L226 Difference]: Without dead ends: 18014 [2024-11-28 03:02:44,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2369 GetRequests, 2363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:44,490 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:44,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:02:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18014 states. [2024-11-28 03:02:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18014 to 18014. [2024-11-28 03:02:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18014 states, 17317 states have (on average 1.6231448865276896) internal successors, (28108), 17317 states have internal predecessors, (28108), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18014 states to 18014 states and 29498 transitions. [2024-11-28 03:02:44,785 INFO L78 Accepts]: Start accepts. Automaton has 18014 states and 29498 transitions. Word has length 2364 [2024-11-28 03:02:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:44,786 INFO L471 AbstractCegarLoop]: Abstraction has 18014 states and 29498 transitions. [2024-11-28 03:02:44,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 194.6) internal successors, (973), 6 states have internal predecessors, (973), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 18014 states and 29498 transitions. [2024-11-28 03:02:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2366 [2024-11-28 03:02:44,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:44,825 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:44,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:45,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:45,026 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:45,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash -423172767, now seen corresponding path program 1 times [2024-11-28 03:02:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:45,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178484609] [2024-11-28 03:02:45,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:45,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:46,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178484609] [2024-11-28 03:02:46,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178484609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442914549] [2024-11-28 03:02:46,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:46,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:46,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:46,881 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:46,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:02:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:47,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:02:47,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 8704 proven. 0 refuted. 0 times theorem prover too weak. 147536 trivial. 0 not checked. [2024-11-28 03:02:47,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:47,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442914549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:47,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:47,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:02:47,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490226863] [2024-11-28 03:02:47,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:47,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:02:47,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:47,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:02:47,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:47,939 INFO L87 Difference]: Start difference. First operand 18014 states and 29498 transitions. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:48,072 INFO L93 Difference]: Finished difference Result 20903 states and 33931 transitions. [2024-11-28 03:02:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:02:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2365 [2024-11-28 03:02:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:48,092 INFO L225 Difference]: With dead ends: 20903 [2024-11-28 03:02:48,092 INFO L226 Difference]: Without dead ends: 18104 [2024-11-28 03:02:48,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2370 GetRequests, 2364 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:48,099 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:48,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18104 states. [2024-11-28 03:02:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18104 to 18104. [2024-11-28 03:02:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18104 states, 17407 states have (on average 1.622220945596599) internal successors, (28238), 17407 states have internal predecessors, (28238), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18104 states to 18104 states and 29628 transitions. [2024-11-28 03:02:48,387 INFO L78 Accepts]: Start accepts. Automaton has 18104 states and 29628 transitions. Word has length 2365 [2024-11-28 03:02:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:48,388 INFO L471 AbstractCegarLoop]: Abstraction has 18104 states and 29628 transitions. [2024-11-28 03:02:48,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:48,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18104 states and 29628 transitions. [2024-11-28 03:02:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2366 [2024-11-28 03:02:48,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:48,430 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:48,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:02:48,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:02:48,630 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:48,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash -653306693, now seen corresponding path program 1 times [2024-11-28 03:02:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:48,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338393014] [2024-11-28 03:02:48,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338393014] [2024-11-28 03:02:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338393014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846134135] [2024-11-28 03:02:50,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:50,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:50,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:50,573 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:50,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:02:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:51,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:02:51,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 8704 proven. 0 refuted. 0 times theorem prover too weak. 147536 trivial. 0 not checked. [2024-11-28 03:02:51,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846134135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:51,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:51,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:02:51,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140094301] [2024-11-28 03:02:51,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:51,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:02:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:51,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:02:51,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:51,608 INFO L87 Difference]: Start difference. First operand 18104 states and 29628 transitions. Second operand has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:51,689 INFO L93 Difference]: Finished difference Result 20873 states and 33861 transitions. [2024-11-28 03:02:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:02:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2365 [2024-11-28 03:02:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:51,707 INFO L225 Difference]: With dead ends: 20873 [2024-11-28 03:02:51,707 INFO L226 Difference]: Without dead ends: 18114 [2024-11-28 03:02:51,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2370 GetRequests, 2365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:51,714 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:51,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:02:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18114 states. [2024-11-28 03:02:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18114 to 18114. [2024-11-28 03:02:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18114 states, 17417 states have (on average 1.6212895446977091) internal successors, (28238), 17417 states have internal predecessors, (28238), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 29628 transitions. [2024-11-28 03:02:52,003 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 29628 transitions. Word has length 2365 [2024-11-28 03:02:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:52,004 INFO L471 AbstractCegarLoop]: Abstraction has 18114 states and 29628 transitions. [2024-11-28 03:02:52,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:02:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 29628 transitions. [2024-11-28 03:02:52,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2367 [2024-11-28 03:02:52,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:52,047 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:52,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:52,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 03:02:52,247 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:52,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash -93625580, now seen corresponding path program 1 times [2024-11-28 03:02:52,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719307283] [2024-11-28 03:02:52,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:54,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719307283] [2024-11-28 03:02:54,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719307283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:54,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825872452] [2024-11-28 03:02:54,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:54,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:54,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:54,114 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:54,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:02:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:55,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 5190 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:02:55,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 9517 proven. 0 refuted. 0 times theorem prover too weak. 146723 trivial. 0 not checked. [2024-11-28 03:02:55,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:02:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825872452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:55,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:02:55,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:02:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864764887] [2024-11-28 03:02:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:55,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:02:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:55,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:02:55,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:55,178 INFO L87 Difference]: Start difference. First operand 18114 states and 29628 transitions. Second operand has 6 states, 5 states have (on average 195.0) internal successors, (975), 6 states have internal predecessors, (975), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:56,757 INFO L93 Difference]: Finished difference Result 21293 states and 34511 transitions. [2024-11-28 03:02:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:02:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 195.0) internal successors, (975), 6 states have internal predecessors, (975), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2366 [2024-11-28 03:02:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:56,776 INFO L225 Difference]: With dead ends: 21293 [2024-11-28 03:02:56,776 INFO L226 Difference]: Without dead ends: 18134 [2024-11-28 03:02:56,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2371 GetRequests, 2365 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:02:56,783 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:56,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:02:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18134 states. [2024-11-28 03:02:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18134 to 18134. [2024-11-28 03:02:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18134 states, 17437 states have (on average 1.6205769341056375) internal successors, (28258), 17437 states have internal predecessors, (28258), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:02:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18134 states to 18134 states and 29648 transitions. [2024-11-28 03:02:57,072 INFO L78 Accepts]: Start accepts. Automaton has 18134 states and 29648 transitions. Word has length 2366 [2024-11-28 03:02:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:57,073 INFO L471 AbstractCegarLoop]: Abstraction has 18134 states and 29648 transitions. [2024-11-28 03:02:57,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 195.0) internal successors, (975), 6 states have internal predecessors, (975), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:02:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 18134 states and 29648 transitions. [2024-11-28 03:02:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2368 [2024-11-28 03:02:57,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:57,108 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:57,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:57,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 03:02:57,309 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:57,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1713245871, now seen corresponding path program 1 times [2024-11-28 03:02:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359954632] [2024-11-28 03:02:57,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:02:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359954632] [2024-11-28 03:02:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359954632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792340764] [2024-11-28 03:02:59,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:59,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:59,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:59,101 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:59,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:03:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:00,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 5193 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:00,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 9756 proven. 0 refuted. 0 times theorem prover too weak. 146484 trivial. 0 not checked. [2024-11-28 03:03:00,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792340764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:00,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:03:00,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186227426] [2024-11-28 03:03:00,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:00,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:00,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:00,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:00,178 INFO L87 Difference]: Start difference. First operand 18134 states and 29648 transitions. Second operand has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:00,298 INFO L93 Difference]: Finished difference Result 21493 states and 34811 transitions. [2024-11-28 03:03:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:00,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2367 [2024-11-28 03:03:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:00,317 INFO L225 Difference]: With dead ends: 21493 [2024-11-28 03:03:00,317 INFO L226 Difference]: Without dead ends: 18224 [2024-11-28 03:03:00,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2372 GetRequests, 2366 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:00,327 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:00,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18224 states. [2024-11-28 03:03:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18224 to 18224. [2024-11-28 03:03:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18224 states, 17527 states have (on average 1.6196725052775718) internal successors, (28388), 17527 states have internal predecessors, (28388), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18224 states to 18224 states and 29778 transitions. [2024-11-28 03:03:00,678 INFO L78 Accepts]: Start accepts. Automaton has 18224 states and 29778 transitions. Word has length 2367 [2024-11-28 03:03:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:00,680 INFO L471 AbstractCegarLoop]: Abstraction has 18224 states and 29778 transitions. [2024-11-28 03:03:00,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 18224 states and 29778 transitions. [2024-11-28 03:03:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2368 [2024-11-28 03:03:00,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:00,723 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:00,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 03:03:00,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:00,924 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:00,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1299349431, now seen corresponding path program 1 times [2024-11-28 03:03:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:00,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766474849] [2024-11-28 03:03:00,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:00,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:02,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766474849] [2024-11-28 03:03:02,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766474849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431177487] [2024-11-28 03:03:02,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:02,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:02,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:02,681 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:02,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 03:03:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:03,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 5193 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:03,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 9756 proven. 0 refuted. 0 times theorem prover too weak. 146484 trivial. 0 not checked. [2024-11-28 03:03:03,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431177487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:03,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:03,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:03:03,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079339346] [2024-11-28 03:03:03,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:03,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:03,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:03,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:03,742 INFO L87 Difference]: Start difference. First operand 18224 states and 29778 transitions. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:03,833 INFO L93 Difference]: Finished difference Result 21463 states and 34741 transitions. [2024-11-28 03:03:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2367 [2024-11-28 03:03:03,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:03,853 INFO L225 Difference]: With dead ends: 21463 [2024-11-28 03:03:03,853 INFO L226 Difference]: Without dead ends: 18234 [2024-11-28 03:03:03,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2372 GetRequests, 2367 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:03,861 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:03,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18234 states. [2024-11-28 03:03:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18234 to 18234. [2024-11-28 03:03:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18234 states, 17537 states have (on average 1.6187489308319554) internal successors, (28388), 17537 states have internal predecessors, (28388), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18234 states to 18234 states and 29778 transitions. [2024-11-28 03:03:04,164 INFO L78 Accepts]: Start accepts. Automaton has 18234 states and 29778 transitions. Word has length 2367 [2024-11-28 03:03:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:04,165 INFO L471 AbstractCegarLoop]: Abstraction has 18234 states and 29778 transitions. [2024-11-28 03:03:04,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 18234 states and 29778 transitions. [2024-11-28 03:03:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2024-11-28 03:03:04,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:04,204 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:04,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 03:03:04,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:04,404 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:04,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1828029530, now seen corresponding path program 1 times [2024-11-28 03:03:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:04,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572323379] [2024-11-28 03:03:04,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572323379] [2024-11-28 03:03:06,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572323379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10788462] [2024-11-28 03:03:06,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:06,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:06,231 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:06,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 03:03:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:07,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 5196 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:03:07,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 10566 proven. 0 refuted. 0 times theorem prover too weak. 145674 trivial. 0 not checked. [2024-11-28 03:03:07,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10788462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:07,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:07,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:03:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229537811] [2024-11-28 03:03:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:07,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:07,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:07,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:07,283 INFO L87 Difference]: Start difference. First operand 18234 states and 29778 transitions. Second operand has 6 states, 5 states have (on average 195.4) internal successors, (977), 6 states have internal predecessors, (977), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:08,680 INFO L93 Difference]: Finished difference Result 21883 states and 35391 transitions. [2024-11-28 03:03:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:08,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 195.4) internal successors, (977), 6 states have internal predecessors, (977), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2368 [2024-11-28 03:03:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:08,700 INFO L225 Difference]: With dead ends: 21883 [2024-11-28 03:03:08,700 INFO L226 Difference]: Without dead ends: 18254 [2024-11-28 03:03:08,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2373 GetRequests, 2367 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:08,708 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:08,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:03:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18254 states. [2024-11-28 03:03:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18254 to 18254. [2024-11-28 03:03:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18254 states, 17557 states have (on average 1.6180440849803497) internal successors, (28408), 17557 states have internal predecessors, (28408), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18254 states to 18254 states and 29798 transitions. [2024-11-28 03:03:08,988 INFO L78 Accepts]: Start accepts. Automaton has 18254 states and 29798 transitions. Word has length 2368 [2024-11-28 03:03:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:08,989 INFO L471 AbstractCegarLoop]: Abstraction has 18254 states and 29798 transitions. [2024-11-28 03:03:08,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 195.4) internal successors, (977), 6 states have internal predecessors, (977), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 18254 states and 29798 transitions. [2024-11-28 03:03:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2370 [2024-11-28 03:03:09,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:09,030 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:09,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-28 03:03:09,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 03:03:09,231 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:09,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash -895853659, now seen corresponding path program 1 times [2024-11-28 03:03:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:09,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398877382] [2024-11-28 03:03:09,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:09,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398877382] [2024-11-28 03:03:11,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398877382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065682626] [2024-11-28 03:03:11,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:11,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:11,198 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:11,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 03:03:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:12,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 5199 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:12,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 10800 proven. 0 refuted. 0 times theorem prover too weak. 145440 trivial. 0 not checked. [2024-11-28 03:03:12,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:12,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065682626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:12,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:12,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:03:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405233168] [2024-11-28 03:03:12,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:12,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:12,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:12,285 INFO L87 Difference]: Start difference. First operand 18254 states and 29798 transitions. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:12,434 INFO L93 Difference]: Finished difference Result 22083 states and 35691 transitions. [2024-11-28 03:03:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:12,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2369 [2024-11-28 03:03:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:12,460 INFO L225 Difference]: With dead ends: 22083 [2024-11-28 03:03:12,460 INFO L226 Difference]: Without dead ends: 18344 [2024-11-28 03:03:12,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2374 GetRequests, 2368 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:12,470 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:12,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18344 states. [2024-11-28 03:03:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18344 to 18344. [2024-11-28 03:03:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18344 states, 17647 states have (on average 1.6171587238624128) internal successors, (28538), 17647 states have internal predecessors, (28538), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18344 states to 18344 states and 29928 transitions. [2024-11-28 03:03:12,744 INFO L78 Accepts]: Start accepts. Automaton has 18344 states and 29928 transitions. Word has length 2369 [2024-11-28 03:03:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:12,746 INFO L471 AbstractCegarLoop]: Abstraction has 18344 states and 29928 transitions. [2024-11-28 03:03:12,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 18344 states and 29928 transitions. [2024-11-28 03:03:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2370 [2024-11-28 03:03:12,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:12,782 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:12,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:12,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 03:03:12,983 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:12,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -596740225, now seen corresponding path program 1 times [2024-11-28 03:03:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:12,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168659027] [2024-11-28 03:03:12,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:12,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:14,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:14,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168659027] [2024-11-28 03:03:14,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168659027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:14,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651445963] [2024-11-28 03:03:14,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:14,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:14,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:14,905 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:14,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 03:03:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:15,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 5199 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:15,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 10800 proven. 0 refuted. 0 times theorem prover too weak. 145440 trivial. 0 not checked. [2024-11-28 03:03:15,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:15,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651445963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:15,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:03:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046137541] [2024-11-28 03:03:15,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:15,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:15,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:15,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:15,968 INFO L87 Difference]: Start difference. First operand 18344 states and 29928 transitions. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:16,068 INFO L93 Difference]: Finished difference Result 22053 states and 35621 transitions. [2024-11-28 03:03:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2369 [2024-11-28 03:03:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:16,088 INFO L225 Difference]: With dead ends: 22053 [2024-11-28 03:03:16,088 INFO L226 Difference]: Without dead ends: 18354 [2024-11-28 03:03:16,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2374 GetRequests, 2369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:16,095 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:16,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18354 states. [2024-11-28 03:03:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18354 to 18354. [2024-11-28 03:03:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18354 states, 17657 states have (on average 1.616242849861245) internal successors, (28538), 17657 states have internal predecessors, (28538), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18354 states to 18354 states and 29928 transitions. [2024-11-28 03:03:16,363 INFO L78 Accepts]: Start accepts. Automaton has 18354 states and 29928 transitions. Word has length 2369 [2024-11-28 03:03:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:16,364 INFO L471 AbstractCegarLoop]: Abstraction has 18354 states and 29928 transitions. [2024-11-28 03:03:16,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 18354 states and 29928 transitions. [2024-11-28 03:03:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2371 [2024-11-28 03:03:16,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:16,404 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:16,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 03:03:16,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 03:03:16,604 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:16,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1230009940, now seen corresponding path program 1 times [2024-11-28 03:03:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562244951] [2024-11-28 03:03:16,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:18,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562244951] [2024-11-28 03:03:18,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562244951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001130659] [2024-11-28 03:03:18,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:18,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:18,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:18,433 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:18,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 03:03:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:19,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 5202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:03:19,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 11607 proven. 0 refuted. 0 times theorem prover too weak. 144633 trivial. 0 not checked. [2024-11-28 03:03:19,488 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:19,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001130659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:19,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:19,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:03:19,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010570673] [2024-11-28 03:03:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:19,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:19,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:19,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:19,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:19,491 INFO L87 Difference]: Start difference. First operand 18354 states and 29928 transitions. Second operand has 6 states, 5 states have (on average 195.8) internal successors, (979), 6 states have internal predecessors, (979), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:20,858 INFO L93 Difference]: Finished difference Result 22473 states and 36271 transitions. [2024-11-28 03:03:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 195.8) internal successors, (979), 6 states have internal predecessors, (979), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2370 [2024-11-28 03:03:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:20,877 INFO L225 Difference]: With dead ends: 22473 [2024-11-28 03:03:20,878 INFO L226 Difference]: Without dead ends: 18374 [2024-11-28 03:03:20,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2375 GetRequests, 2369 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:20,885 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:20,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:03:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18374 states. [2024-11-28 03:03:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18374 to 18374. [2024-11-28 03:03:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18374 states, 17677 states have (on average 1.6155456242575097) internal successors, (28558), 17677 states have internal predecessors, (28558), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18374 states to 18374 states and 29948 transitions. [2024-11-28 03:03:21,135 INFO L78 Accepts]: Start accepts. Automaton has 18374 states and 29948 transitions. Word has length 2370 [2024-11-28 03:03:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:21,136 INFO L471 AbstractCegarLoop]: Abstraction has 18374 states and 29948 transitions. [2024-11-28 03:03:21,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 195.8) internal successors, (979), 6 states have internal predecessors, (979), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18374 states and 29948 transitions. [2024-11-28 03:03:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2372 [2024-11-28 03:03:21,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:21,171 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:21,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 03:03:21,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 03:03:21,372 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:21,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash 38624883, now seen corresponding path program 1 times [2024-11-28 03:03:21,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265774611] [2024-11-28 03:03:21,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:21,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:23,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:23,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265774611] [2024-11-28 03:03:23,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265774611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:23,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927957354] [2024-11-28 03:03:23,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:23,255 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:23,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 03:03:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:24,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 5205 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:24,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 11836 proven. 0 refuted. 0 times theorem prover too weak. 144404 trivial. 0 not checked. [2024-11-28 03:03:24,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927957354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:24,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:03:24,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439665505] [2024-11-28 03:03:24,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:24,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:24,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:24,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:24,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:24,342 INFO L87 Difference]: Start difference. First operand 18374 states and 29948 transitions. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:24,470 INFO L93 Difference]: Finished difference Result 22513 states and 36321 transitions. [2024-11-28 03:03:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2371 [2024-11-28 03:03:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:24,497 INFO L225 Difference]: With dead ends: 22513 [2024-11-28 03:03:24,498 INFO L226 Difference]: Without dead ends: 18384 [2024-11-28 03:03:24,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2376 GetRequests, 2371 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:24,508 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:24,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18384 states. [2024-11-28 03:03:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18384 to 18384. [2024-11-28 03:03:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18384 states, 17687 states have (on average 1.6151976027590886) internal successors, (28568), 17687 states have internal predecessors, (28568), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18384 states to 18384 states and 29958 transitions. [2024-11-28 03:03:24,834 INFO L78 Accepts]: Start accepts. Automaton has 18384 states and 29958 transitions. Word has length 2371 [2024-11-28 03:03:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:24,835 INFO L471 AbstractCegarLoop]: Abstraction has 18384 states and 29958 transitions. [2024-11-28 03:03:24,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 18384 states and 29958 transitions. [2024-11-28 03:03:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2372 [2024-11-28 03:03:24,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:24,875 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:24,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-28 03:03:25,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 03:03:25,076 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:25,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -617296755, now seen corresponding path program 1 times [2024-11-28 03:03:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402768398] [2024-11-28 03:03:25,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:27,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402768398] [2024-11-28 03:03:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402768398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151753251] [2024-11-28 03:03:27,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:27,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:27,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:27,118 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:27,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 03:03:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:28,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 5205 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:28,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 11836 proven. 0 refuted. 0 times theorem prover too weak. 144404 trivial. 0 not checked. [2024-11-28 03:03:28,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:28,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151753251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:28,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:28,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:03:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133168228] [2024-11-28 03:03:28,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:28,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:28,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:28,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:28,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:28,168 INFO L87 Difference]: Start difference. First operand 18384 states and 29958 transitions. Second operand has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:28,269 INFO L93 Difference]: Finished difference Result 22703 states and 36601 transitions. [2024-11-28 03:03:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:28,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2371 [2024-11-28 03:03:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:28,287 INFO L225 Difference]: With dead ends: 22703 [2024-11-28 03:03:28,287 INFO L226 Difference]: Without dead ends: 18474 [2024-11-28 03:03:28,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2376 GetRequests, 2370 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:28,295 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:28,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18474 states. [2024-11-28 03:03:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18474 to 18474. [2024-11-28 03:03:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18474 states, 17777 states have (on average 1.6137706024638578) internal successors, (28688), 17777 states have internal predecessors, (28688), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18474 states to 18474 states and 30078 transitions. [2024-11-28 03:03:28,554 INFO L78 Accepts]: Start accepts. Automaton has 18474 states and 30078 transitions. Word has length 2371 [2024-11-28 03:03:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:28,555 INFO L471 AbstractCegarLoop]: Abstraction has 18474 states and 30078 transitions. [2024-11-28 03:03:28,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18474 states and 30078 transitions. [2024-11-28 03:03:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2373 [2024-11-28 03:03:28,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:28,592 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:28,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-28 03:03:28,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:03:28,792 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:28,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash 740895386, now seen corresponding path program 1 times [2024-11-28 03:03:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:28,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331228500] [2024-11-28 03:03:28,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:30,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331228500] [2024-11-28 03:03:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331228500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618617941] [2024-11-28 03:03:30,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:30,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:30,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:30,611 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:30,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 03:03:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:31,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 5208 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:03:31,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 12640 proven. 0 refuted. 0 times theorem prover too weak. 143600 trivial. 0 not checked. [2024-11-28 03:03:31,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618617941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:31,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:31,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:03:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266813962] [2024-11-28 03:03:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:31,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:31,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:31,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:31,686 INFO L87 Difference]: Start difference. First operand 18474 states and 30078 transitions. Second operand has 6 states, 5 states have (on average 196.2) internal successors, (981), 6 states have internal predecessors, (981), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:33,052 INFO L93 Difference]: Finished difference Result 23063 states and 37151 transitions. [2024-11-28 03:03:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 196.2) internal successors, (981), 6 states have internal predecessors, (981), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2372 [2024-11-28 03:03:33,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:33,071 INFO L225 Difference]: With dead ends: 23063 [2024-11-28 03:03:33,071 INFO L226 Difference]: Without dead ends: 18494 [2024-11-28 03:03:33,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2377 GetRequests, 2371 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:33,078 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:33,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:03:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18494 states. [2024-11-28 03:03:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18494 to 18494. [2024-11-28 03:03:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18494 states, 17797 states have (on average 1.6130808563240995) internal successors, (28708), 17797 states have internal predecessors, (28708), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18494 states to 18494 states and 30098 transitions. [2024-11-28 03:03:33,332 INFO L78 Accepts]: Start accepts. Automaton has 18494 states and 30098 transitions. Word has length 2372 [2024-11-28 03:03:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:33,333 INFO L471 AbstractCegarLoop]: Abstraction has 18494 states and 30098 transitions. [2024-11-28 03:03:33,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 196.2) internal successors, (981), 6 states have internal predecessors, (981), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18494 states and 30098 transitions. [2024-11-28 03:03:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2374 [2024-11-28 03:03:33,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:33,369 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:33,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:33,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 03:03:33,569 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:33,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash 838761449, now seen corresponding path program 1 times [2024-11-28 03:03:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956196731] [2024-11-28 03:03:33,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956196731] [2024-11-28 03:03:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956196731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627798131] [2024-11-28 03:03:35,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:35,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:35,362 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:35,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 03:03:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:36,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 5211 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:36,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 12864 proven. 0 refuted. 0 times theorem prover too weak. 143376 trivial. 0 not checked. [2024-11-28 03:03:36,420 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:36,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627798131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:36,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:36,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:03:36,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725296841] [2024-11-28 03:03:36,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:36,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:36,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:36,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:36,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:36,425 INFO L87 Difference]: Start difference. First operand 18494 states and 30098 transitions. Second operand has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:36,571 INFO L93 Difference]: Finished difference Result 23263 states and 37451 transitions. [2024-11-28 03:03:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:36,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2373 [2024-11-28 03:03:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:36,589 INFO L225 Difference]: With dead ends: 23263 [2024-11-28 03:03:36,589 INFO L226 Difference]: Without dead ends: 18584 [2024-11-28 03:03:36,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:36,597 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:36,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18584 states. [2024-11-28 03:03:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18584 to 18584. [2024-11-28 03:03:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18584 states, 17887 states have (on average 1.612232347514955) internal successors, (28838), 17887 states have internal predecessors, (28838), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18584 states to 18584 states and 30228 transitions. [2024-11-28 03:03:36,859 INFO L78 Accepts]: Start accepts. Automaton has 18584 states and 30228 transitions. Word has length 2373 [2024-11-28 03:03:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:36,861 INFO L471 AbstractCegarLoop]: Abstraction has 18584 states and 30228 transitions. [2024-11-28 03:03:36,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states and 30228 transitions. [2024-11-28 03:03:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2374 [2024-11-28 03:03:36,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:36,902 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:36,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-28 03:03:37,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 03:03:37,102 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:37,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1984371645, now seen corresponding path program 1 times [2024-11-28 03:03:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031239197] [2024-11-28 03:03:37,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:38,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031239197] [2024-11-28 03:03:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031239197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946708631] [2024-11-28 03:03:38,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:38,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:38,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:38,893 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:38,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 03:03:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:39,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 5211 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:39,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 12864 proven. 0 refuted. 0 times theorem prover too weak. 143376 trivial. 0 not checked. [2024-11-28 03:03:39,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946708631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:39,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:03:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356963165] [2024-11-28 03:03:39,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:39,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:39,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:39,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:39,971 INFO L87 Difference]: Start difference. First operand 18584 states and 30228 transitions. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:40,076 INFO L93 Difference]: Finished difference Result 23233 states and 37381 transitions. [2024-11-28 03:03:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2373 [2024-11-28 03:03:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:40,096 INFO L225 Difference]: With dead ends: 23233 [2024-11-28 03:03:40,096 INFO L226 Difference]: Without dead ends: 18594 [2024-11-28 03:03:40,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2373 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:40,105 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:40,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18594 states. [2024-11-28 03:03:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18594 to 18594. [2024-11-28 03:03:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18594 states, 17897 states have (on average 1.611331508073979) internal successors, (28838), 17897 states have internal predecessors, (28838), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18594 states to 18594 states and 30228 transitions. [2024-11-28 03:03:40,374 INFO L78 Accepts]: Start accepts. Automaton has 18594 states and 30228 transitions. Word has length 2373 [2024-11-28 03:03:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:40,375 INFO L471 AbstractCegarLoop]: Abstraction has 18594 states and 30228 transitions. [2024-11-28 03:03:40,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18594 states and 30228 transitions. [2024-11-28 03:03:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2375 [2024-11-28 03:03:40,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:40,414 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:40,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:40,614 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 820124052, now seen corresponding path program 1 times [2024-11-28 03:03:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018968770] [2024-11-28 03:03:40,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:42,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:42,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018968770] [2024-11-28 03:03:42,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018968770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:42,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790848558] [2024-11-28 03:03:42,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:42,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:42,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:42,407 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:42,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 03:03:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:43,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 5214 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:03:43,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 13665 proven. 0 refuted. 0 times theorem prover too weak. 142575 trivial. 0 not checked. [2024-11-28 03:03:43,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:43,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790848558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:43,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:43,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:03:43,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042383801] [2024-11-28 03:03:43,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:43,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:43,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:43,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:43,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:43,454 INFO L87 Difference]: Start difference. First operand 18594 states and 30228 transitions. Second operand has 6 states, 5 states have (on average 196.6) internal successors, (983), 6 states have internal predecessors, (983), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:44,832 INFO L93 Difference]: Finished difference Result 23653 states and 38031 transitions. [2024-11-28 03:03:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:44,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 196.6) internal successors, (983), 6 states have internal predecessors, (983), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2374 [2024-11-28 03:03:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:44,851 INFO L225 Difference]: With dead ends: 23653 [2024-11-28 03:03:44,851 INFO L226 Difference]: Without dead ends: 18614 [2024-11-28 03:03:44,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2379 GetRequests, 2373 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:44,860 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:44,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:03:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18614 states. [2024-11-28 03:03:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18614 to 18614. [2024-11-28 03:03:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18614 states, 17917 states have (on average 1.6106491042027125) internal successors, (28858), 17917 states have internal predecessors, (28858), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18614 states to 18614 states and 30248 transitions. [2024-11-28 03:03:45,150 INFO L78 Accepts]: Start accepts. Automaton has 18614 states and 30248 transitions. Word has length 2374 [2024-11-28 03:03:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:45,151 INFO L471 AbstractCegarLoop]: Abstraction has 18614 states and 30248 transitions. [2024-11-28 03:03:45,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 196.6) internal successors, (983), 6 states have internal predecessors, (983), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:03:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 18614 states and 30248 transitions. [2024-11-28 03:03:45,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2376 [2024-11-28 03:03:45,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:45,193 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:45,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 03:03:45,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:45,393 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:45,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash 564420041, now seen corresponding path program 1 times [2024-11-28 03:03:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479431708] [2024-11-28 03:03:45,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:47,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:47,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479431708] [2024-11-28 03:03:47,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479431708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:47,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369997160] [2024-11-28 03:03:47,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:47,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:47,325 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:47,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 03:03:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:48,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 5217 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:03:48,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 13884 proven. 0 refuted. 0 times theorem prover too weak. 142356 trivial. 0 not checked. [2024-11-28 03:03:48,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:48,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369997160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:48,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:48,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:03:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846677728] [2024-11-28 03:03:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:48,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:48,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:48,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:48,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:48,422 INFO L87 Difference]: Start difference. First operand 18614 states and 30248 transitions. Second operand has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:48,570 INFO L93 Difference]: Finished difference Result 23853 states and 38331 transitions. [2024-11-28 03:03:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2375 [2024-11-28 03:03:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:48,588 INFO L225 Difference]: With dead ends: 23853 [2024-11-28 03:03:48,588 INFO L226 Difference]: Without dead ends: 18704 [2024-11-28 03:03:48,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2380 GetRequests, 2374 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:48,595 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:48,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18704 states. [2024-11-28 03:03:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18704 to 18704. [2024-11-28 03:03:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18704 states, 18007 states have (on average 1.609818403954018) internal successors, (28988), 18007 states have internal predecessors, (28988), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 30378 transitions. [2024-11-28 03:03:48,847 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 30378 transitions. Word has length 2375 [2024-11-28 03:03:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:48,848 INFO L471 AbstractCegarLoop]: Abstraction has 18704 states and 30378 transitions. [2024-11-28 03:03:48,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 30378 transitions. [2024-11-28 03:03:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2376 [2024-11-28 03:03:48,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:48,886 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:48,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-28 03:03:49,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-28 03:03:49,086 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:49,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1504072495, now seen corresponding path program 1 times [2024-11-28 03:03:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:49,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729975392] [2024-11-28 03:03:49,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:50,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:50,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729975392] [2024-11-28 03:03:50,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729975392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692485270] [2024-11-28 03:03:50,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:50,915 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:50,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 03:03:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:51,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 5217 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:51,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 13884 proven. 0 refuted. 0 times theorem prover too weak. 142356 trivial. 0 not checked. [2024-11-28 03:03:52,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692485270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:52,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:52,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:03:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578523951] [2024-11-28 03:03:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:52,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:52,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:52,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:52,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:52,022 INFO L87 Difference]: Start difference. First operand 18704 states and 30378 transitions. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:52,130 INFO L93 Difference]: Finished difference Result 23823 states and 38261 transitions. [2024-11-28 03:03:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2375 [2024-11-28 03:03:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:52,150 INFO L225 Difference]: With dead ends: 23823 [2024-11-28 03:03:52,150 INFO L226 Difference]: Without dead ends: 18714 [2024-11-28 03:03:52,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2380 GetRequests, 2375 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:52,158 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:52,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18714 states. [2024-11-28 03:03:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18714 to 18714. [2024-11-28 03:03:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18714 states, 18017 states have (on average 1.6089249042570906) internal successors, (28988), 18017 states have internal predecessors, (28988), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18714 states to 18714 states and 30378 transitions. [2024-11-28 03:03:52,452 INFO L78 Accepts]: Start accepts. Automaton has 18714 states and 30378 transitions. Word has length 2375 [2024-11-28 03:03:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:52,453 INFO L471 AbstractCegarLoop]: Abstraction has 18714 states and 30378 transitions. [2024-11-28 03:03:52,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18714 states and 30378 transitions. [2024-11-28 03:03:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2377 [2024-11-28 03:03:52,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:52,492 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:52,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 03:03:52,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:52,692 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:52,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash -833968460, now seen corresponding path program 1 times [2024-11-28 03:03:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777732075] [2024-11-28 03:03:52,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777732075] [2024-11-28 03:03:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777732075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:54,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551837871] [2024-11-28 03:03:54,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:54,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:54,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:54,494 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:54,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 03:03:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:55,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 5220 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:03:55,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 13884 proven. 0 refuted. 0 times theorem prover too weak. 142356 trivial. 0 not checked. [2024-11-28 03:03:55,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:55,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551837871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:55,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:55,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:03:55,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743443116] [2024-11-28 03:03:55,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:55,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:55,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:55,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:55,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:55,549 INFO L87 Difference]: Start difference. First operand 18714 states and 30378 transitions. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:55,632 INFO L93 Difference]: Finished difference Result 23913 states and 38391 transitions. [2024-11-28 03:03:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:55,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2376 [2024-11-28 03:03:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:55,650 INFO L225 Difference]: With dead ends: 23913 [2024-11-28 03:03:55,650 INFO L226 Difference]: Without dead ends: 18724 [2024-11-28 03:03:55,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2381 GetRequests, 2376 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:55,657 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:55,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18724 states. [2024-11-28 03:03:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18724 to 18724. [2024-11-28 03:03:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18724 states, 18027 states have (on average 1.6085871193210184) internal successors, (28998), 18027 states have internal predecessors, (28998), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:03:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18724 states to 18724 states and 30388 transitions. [2024-11-28 03:03:55,950 INFO L78 Accepts]: Start accepts. Automaton has 18724 states and 30388 transitions. Word has length 2376 [2024-11-28 03:03:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:55,951 INFO L471 AbstractCegarLoop]: Abstraction has 18724 states and 30388 transitions. [2024-11-28 03:03:55,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:03:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 18724 states and 30388 transitions. [2024-11-28 03:03:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2377 [2024-11-28 03:03:55,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:55,988 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:56,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-28 03:03:56,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:56,189 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:56,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2000453414, now seen corresponding path program 1 times [2024-11-28 03:03:56,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:56,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552679585] [2024-11-28 03:03:56,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:03:57,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552679585] [2024-11-28 03:03:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552679585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227696126] [2024-11-28 03:03:57,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:57,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:57,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:57,979 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:57,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 03:03:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:58,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 5220 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:03:59,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 14682 proven. 0 refuted. 0 times theorem prover too weak. 141558 trivial. 0 not checked. [2024-11-28 03:03:59,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:03:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227696126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:03:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:03:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766350002] [2024-11-28 03:03:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:59,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:59,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:59,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:59,055 INFO L87 Difference]: Start difference. First operand 18724 states and 30388 transitions. Second operand has 6 states, 5 states have (on average 197.0) internal successors, (985), 6 states have internal predecessors, (985), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:00,479 INFO L93 Difference]: Finished difference Result 24263 states and 38931 transitions. [2024-11-28 03:04:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 197.0) internal successors, (985), 6 states have internal predecessors, (985), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2376 [2024-11-28 03:04:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:00,498 INFO L225 Difference]: With dead ends: 24263 [2024-11-28 03:04:00,498 INFO L226 Difference]: Without dead ends: 18744 [2024-11-28 03:04:00,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2381 GetRequests, 2375 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:00,506 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:00,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:04:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18744 states. [2024-11-28 03:04:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18744 to 18744. [2024-11-28 03:04:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18744 states, 18047 states have (on average 1.607912672466338) internal successors, (29018), 18047 states have internal predecessors, (29018), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18744 states to 18744 states and 30408 transitions. [2024-11-28 03:04:00,812 INFO L78 Accepts]: Start accepts. Automaton has 18744 states and 30408 transitions. Word has length 2376 [2024-11-28 03:04:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:00,813 INFO L471 AbstractCegarLoop]: Abstraction has 18744 states and 30408 transitions. [2024-11-28 03:04:00,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 197.0) internal successors, (985), 6 states have internal predecessors, (985), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 18744 states and 30408 transitions. [2024-11-28 03:04:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2378 [2024-11-28 03:04:00,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:00,847 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:00,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-28 03:04:01,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:01,048 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:01,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2081556013, now seen corresponding path program 1 times [2024-11-28 03:04:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997219843] [2024-11-28 03:04:01,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997219843] [2024-11-28 03:04:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997219843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801820498] [2024-11-28 03:04:02,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:02,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:02,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:02,830 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:02,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 03:04:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:03,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 5223 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:03,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 14896 proven. 0 refuted. 0 times theorem prover too weak. 141344 trivial. 0 not checked. [2024-11-28 03:04:03,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801820498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:03,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:04:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978646955] [2024-11-28 03:04:03,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:03,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:03,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:03,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:03,874 INFO L87 Difference]: Start difference. First operand 18744 states and 30408 transitions. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:03,973 INFO L93 Difference]: Finished difference Result 24463 states and 39231 transitions. [2024-11-28 03:04:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2377 [2024-11-28 03:04:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:03,991 INFO L225 Difference]: With dead ends: 24463 [2024-11-28 03:04:03,991 INFO L226 Difference]: Without dead ends: 18834 [2024-11-28 03:04:03,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2382 GetRequests, 2376 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:03,998 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:03,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18834 states. [2024-11-28 03:04:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18834 to 18834. [2024-11-28 03:04:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18834 states, 18137 states have (on average 1.6071015052103435) internal successors, (29148), 18137 states have internal predecessors, (29148), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18834 states to 18834 states and 30538 transitions. [2024-11-28 03:04:04,254 INFO L78 Accepts]: Start accepts. Automaton has 18834 states and 30538 transitions. Word has length 2377 [2024-11-28 03:04:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:04,255 INFO L471 AbstractCegarLoop]: Abstraction has 18834 states and 30538 transitions. [2024-11-28 03:04:04,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 18834 states and 30538 transitions. [2024-11-28 03:04:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2378 [2024-11-28 03:04:04,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:04,290 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:04,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-28 03:04:04,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:04,490 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:04,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1192581895, now seen corresponding path program 1 times [2024-11-28 03:04:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:04,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677409017] [2024-11-28 03:04:04,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:06,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677409017] [2024-11-28 03:04:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677409017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367063180] [2024-11-28 03:04:06,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:06,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:06,233 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:06,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 03:04:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:07,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 5223 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:04:07,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 14896 proven. 0 refuted. 0 times theorem prover too weak. 141344 trivial. 0 not checked. [2024-11-28 03:04:07,245 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367063180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:07,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:07,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:04:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040311001] [2024-11-28 03:04:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:07,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:04:07,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:07,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:04:07,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:07,248 INFO L87 Difference]: Start difference. First operand 18834 states and 30538 transitions. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:07,328 INFO L93 Difference]: Finished difference Result 24433 states and 39161 transitions. [2024-11-28 03:04:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:04:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2377 [2024-11-28 03:04:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:07,346 INFO L225 Difference]: With dead ends: 24433 [2024-11-28 03:04:07,346 INFO L226 Difference]: Without dead ends: 18844 [2024-11-28 03:04:07,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2382 GetRequests, 2377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:07,353 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:07,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18844 states. [2024-11-28 03:04:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18844 to 18844. [2024-11-28 03:04:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18844 states, 18147 states have (on average 1.6062159034551164) internal successors, (29148), 18147 states have internal predecessors, (29148), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18844 states to 18844 states and 30538 transitions. [2024-11-28 03:04:07,594 INFO L78 Accepts]: Start accepts. Automaton has 18844 states and 30538 transitions. Word has length 2377 [2024-11-28 03:04:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:07,595 INFO L471 AbstractCegarLoop]: Abstraction has 18844 states and 30538 transitions. [2024-11-28 03:04:07,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 18844 states and 30538 transitions. [2024-11-28 03:04:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2379 [2024-11-28 03:04:07,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:07,630 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:07,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-28 03:04:07,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:07,830 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:07,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:07,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1786793172, now seen corresponding path program 1 times [2024-11-28 03:04:07,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:07,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848154486] [2024-11-28 03:04:07,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:07,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848154486] [2024-11-28 03:04:09,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848154486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41318325] [2024-11-28 03:04:09,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:09,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:09,555 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:09,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 03:04:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:10,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 5226 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:04:10,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 15691 proven. 0 refuted. 0 times theorem prover too weak. 140549 trivial. 0 not checked. [2024-11-28 03:04:10,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41318325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:10,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:04:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355893824] [2024-11-28 03:04:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:10,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:04:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:10,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:04:10,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:10,587 INFO L87 Difference]: Start difference. First operand 18844 states and 30538 transitions. Second operand has 6 states, 5 states have (on average 197.4) internal successors, (987), 6 states have internal predecessors, (987), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:11,911 INFO L93 Difference]: Finished difference Result 24853 states and 39811 transitions. [2024-11-28 03:04:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 197.4) internal successors, (987), 6 states have internal predecessors, (987), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2378 [2024-11-28 03:04:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:11,929 INFO L225 Difference]: With dead ends: 24853 [2024-11-28 03:04:11,929 INFO L226 Difference]: Without dead ends: 18864 [2024-11-28 03:04:11,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2383 GetRequests, 2377 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:11,937 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:11,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:04:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18864 states. [2024-11-28 03:04:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18864 to 18864. [2024-11-28 03:04:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18864 states, 18167 states have (on average 1.605548522045467) internal successors, (29168), 18167 states have internal predecessors, (29168), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18864 states to 18864 states and 30558 transitions. [2024-11-28 03:04:12,183 INFO L78 Accepts]: Start accepts. Automaton has 18864 states and 30558 transitions. Word has length 2378 [2024-11-28 03:04:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:12,184 INFO L471 AbstractCegarLoop]: Abstraction has 18864 states and 30558 transitions. [2024-11-28 03:04:12,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 197.4) internal successors, (987), 6 states have internal predecessors, (987), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 18864 states and 30558 transitions. [2024-11-28 03:04:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2380 [2024-11-28 03:04:12,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:12,219 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:12,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-28 03:04:12,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 03:04:12,419 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:12,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 370271493, now seen corresponding path program 1 times [2024-11-28 03:04:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:12,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764812559] [2024-11-28 03:04:12,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:14,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764812559] [2024-11-28 03:04:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764812559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402418404] [2024-11-28 03:04:14,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:14,186 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 03:04:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:15,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 5229 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:15,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 15900 proven. 0 refuted. 0 times theorem prover too weak. 140340 trivial. 0 not checked. [2024-11-28 03:04:15,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:15,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402418404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:15,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:15,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:04:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564518597] [2024-11-28 03:04:15,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:15,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:15,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:15,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:15,270 INFO L87 Difference]: Start difference. First operand 18864 states and 30558 transitions. Second operand has 4 states, 4 states have (on average 246.25) internal successors, (985), 4 states have internal predecessors, (985), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:15,388 INFO L93 Difference]: Finished difference Result 25053 states and 40111 transitions. [2024-11-28 03:04:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 246.25) internal successors, (985), 4 states have internal predecessors, (985), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2379 [2024-11-28 03:04:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:15,410 INFO L225 Difference]: With dead ends: 25053 [2024-11-28 03:04:15,410 INFO L226 Difference]: Without dead ends: 18954 [2024-11-28 03:04:15,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2384 GetRequests, 2378 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:15,418 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:15,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18954 states. [2024-11-28 03:04:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18954 to 18954. [2024-11-28 03:04:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18954 states, 18257 states have (on average 1.6047543408007887) internal successors, (29298), 18257 states have internal predecessors, (29298), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18954 states to 18954 states and 30688 transitions. [2024-11-28 03:04:15,736 INFO L78 Accepts]: Start accepts. Automaton has 18954 states and 30688 transitions. Word has length 2379 [2024-11-28 03:04:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:15,737 INFO L471 AbstractCegarLoop]: Abstraction has 18954 states and 30688 transitions. [2024-11-28 03:04:15,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.25) internal successors, (985), 4 states have internal predecessors, (985), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 18954 states and 30688 transitions. [2024-11-28 03:04:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2380 [2024-11-28 03:04:15,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:15,778 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:15,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-28 03:04:15,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-28 03:04:15,979 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:15,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1213636075, now seen corresponding path program 1 times [2024-11-28 03:04:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:15,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130503402] [2024-11-28 03:04:15,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:17,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130503402] [2024-11-28 03:04:17,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130503402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931194721] [2024-11-28 03:04:17,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:17,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:17,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:17,780 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:17,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 03:04:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:18,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 5229 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:04:18,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 15900 proven. 0 refuted. 0 times theorem prover too weak. 140340 trivial. 0 not checked. [2024-11-28 03:04:18,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931194721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:18,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:04:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478219551] [2024-11-28 03:04:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:18,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:04:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:18,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:04:18,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:18,808 INFO L87 Difference]: Start difference. First operand 18954 states and 30688 transitions. Second operand has 3 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:18,894 INFO L93 Difference]: Finished difference Result 25023 states and 40041 transitions. [2024-11-28 03:04:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:04:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2379 [2024-11-28 03:04:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:18,912 INFO L225 Difference]: With dead ends: 25023 [2024-11-28 03:04:18,912 INFO L226 Difference]: Without dead ends: 18964 [2024-11-28 03:04:18,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2384 GetRequests, 2379 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:18,919 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:18,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18964 states. [2024-11-28 03:04:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18964 to 18964. [2024-11-28 03:04:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18964 states, 18267 states have (on average 1.6038758416817211) internal successors, (29298), 18267 states have internal predecessors, (29298), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18964 states to 18964 states and 30688 transitions. [2024-11-28 03:04:19,160 INFO L78 Accepts]: Start accepts. Automaton has 18964 states and 30688 transitions. Word has length 2379 [2024-11-28 03:04:19,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:19,161 INFO L471 AbstractCegarLoop]: Abstraction has 18964 states and 30688 transitions. [2024-11-28 03:04:19,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 18964 states and 30688 transitions. [2024-11-28 03:04:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2381 [2024-11-28 03:04:19,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:19,195 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:19,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-28 03:04:19,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-28 03:04:19,395 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:19,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1917363086, now seen corresponding path program 1 times [2024-11-28 03:04:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363626979] [2024-11-28 03:04:19,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363626979] [2024-11-28 03:04:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363626979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127784386] [2024-11-28 03:04:21,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:21,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:21,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:21,227 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:21,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 03:04:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:22,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 5232 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:22,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 15900 proven. 0 refuted. 0 times theorem prover too weak. 140340 trivial. 0 not checked. [2024-11-28 03:04:22,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:22,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127784386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:22,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:04:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085028897] [2024-11-28 03:04:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:22,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:22,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:22,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:22,305 INFO L87 Difference]: Start difference. First operand 18964 states and 30688 transitions. Second operand has 4 states, 4 states have (on average 246.5) internal successors, (986), 4 states have internal predecessors, (986), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:22,417 INFO L93 Difference]: Finished difference Result 25343 states and 40531 transitions. [2024-11-28 03:04:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:22,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 246.5) internal successors, (986), 4 states have internal predecessors, (986), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2380 [2024-11-28 03:04:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:22,438 INFO L225 Difference]: With dead ends: 25343 [2024-11-28 03:04:22,438 INFO L226 Difference]: Without dead ends: 19064 [2024-11-28 03:04:22,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2385 GetRequests, 2379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:22,447 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:22,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2024-11-28 03:04:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2024-11-28 03:04:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 18367 states have (on average 1.603310284749823) internal successors, (29448), 18367 states have internal predecessors, (29448), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 30838 transitions. [2024-11-28 03:04:22,766 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 30838 transitions. Word has length 2380 [2024-11-28 03:04:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:22,768 INFO L471 AbstractCegarLoop]: Abstraction has 19064 states and 30838 transitions. [2024-11-28 03:04:22,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.5) internal successors, (986), 4 states have internal predecessors, (986), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 30838 transitions. [2024-11-28 03:04:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2381 [2024-11-28 03:04:22,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:22,808 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:22,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-28 03:04:23,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:23,009 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:23,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash -649820390, now seen corresponding path program 1 times [2024-11-28 03:04:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344776629] [2024-11-28 03:04:23,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344776629] [2024-11-28 03:04:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344776629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428898464] [2024-11-28 03:04:24,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:24,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:24,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:24,826 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:24,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 03:04:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:25,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 5232 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:04:25,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 16692 proven. 0 refuted. 0 times theorem prover too weak. 139548 trivial. 0 not checked. [2024-11-28 03:04:25,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428898464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:25,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:04:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714425480] [2024-11-28 03:04:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:25,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:04:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:25,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:04:25,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:25,890 INFO L87 Difference]: Start difference. First operand 19064 states and 30838 transitions. Second operand has 6 states, 5 states have (on average 197.8) internal successors, (989), 6 states have internal predecessors, (989), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:27,264 INFO L93 Difference]: Finished difference Result 25643 states and 40991 transitions. [2024-11-28 03:04:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 197.8) internal successors, (989), 6 states have internal predecessors, (989), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2380 [2024-11-28 03:04:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:27,282 INFO L225 Difference]: With dead ends: 25643 [2024-11-28 03:04:27,283 INFO L226 Difference]: Without dead ends: 19084 [2024-11-28 03:04:27,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2385 GetRequests, 2379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:27,290 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:27,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:04:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19084 states. [2024-11-28 03:04:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19084 to 19084. [2024-11-28 03:04:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19084 states, 18387 states have (on average 1.6026540490563985) internal successors, (29468), 18387 states have internal predecessors, (29468), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19084 states to 19084 states and 30858 transitions. [2024-11-28 03:04:27,539 INFO L78 Accepts]: Start accepts. Automaton has 19084 states and 30858 transitions. Word has length 2380 [2024-11-28 03:04:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:27,540 INFO L471 AbstractCegarLoop]: Abstraction has 19084 states and 30858 transitions. [2024-11-28 03:04:27,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 197.8) internal successors, (989), 6 states have internal predecessors, (989), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 19084 states and 30858 transitions. [2024-11-28 03:04:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2382 [2024-11-28 03:04:27,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:27,575 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:27,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-28 03:04:27,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:27,775 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:27,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1010023025, now seen corresponding path program 1 times [2024-11-28 03:04:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133918556] [2024-11-28 03:04:27,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133918556] [2024-11-28 03:04:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133918556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974703013] [2024-11-28 03:04:29,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:29,608 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:29,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 03:04:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:30,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 5235 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:30,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 16896 proven. 0 refuted. 0 times theorem prover too weak. 139344 trivial. 0 not checked. [2024-11-28 03:04:30,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974703013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:04:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466158839] [2024-11-28 03:04:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:30,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:30,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:30,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:30,717 INFO L87 Difference]: Start difference. First operand 19084 states and 30858 transitions. Second operand has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:30,833 INFO L93 Difference]: Finished difference Result 25843 states and 41291 transitions. [2024-11-28 03:04:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2381 [2024-11-28 03:04:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:30,855 INFO L225 Difference]: With dead ends: 25843 [2024-11-28 03:04:30,855 INFO L226 Difference]: Without dead ends: 19174 [2024-11-28 03:04:30,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2386 GetRequests, 2380 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:30,864 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:30,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19174 states. [2024-11-28 03:04:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19174 to 19174. [2024-11-28 03:04:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19174 states, 18477 states have (on average 1.6018834226335443) internal successors, (29598), 18477 states have internal predecessors, (29598), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19174 states to 19174 states and 30988 transitions. [2024-11-28 03:04:31,140 INFO L78 Accepts]: Start accepts. Automaton has 19174 states and 30988 transitions. Word has length 2381 [2024-11-28 03:04:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:31,141 INFO L471 AbstractCegarLoop]: Abstraction has 19174 states and 30988 transitions. [2024-11-28 03:04:31,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 19174 states and 30988 transitions. [2024-11-28 03:04:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2382 [2024-11-28 03:04:31,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:31,179 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:31,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-28 03:04:31,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:31,379 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:31,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash 686463947, now seen corresponding path program 1 times [2024-11-28 03:04:31,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:31,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117178743] [2024-11-28 03:04:31,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:31,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117178743] [2024-11-28 03:04:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117178743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749721752] [2024-11-28 03:04:33,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:33,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:33,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:33,186 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:33,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 03:04:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:34,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 5235 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:04:34,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 16896 proven. 0 refuted. 0 times theorem prover too weak. 139344 trivial. 0 not checked. [2024-11-28 03:04:34,260 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749721752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:34,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:04:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708950506] [2024-11-28 03:04:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:34,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:04:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:34,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:04:34,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:34,264 INFO L87 Difference]: Start difference. First operand 19174 states and 30988 transitions. Second operand has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:34,368 INFO L93 Difference]: Finished difference Result 25813 states and 41221 transitions. [2024-11-28 03:04:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:04:34,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2381 [2024-11-28 03:04:34,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:34,390 INFO L225 Difference]: With dead ends: 25813 [2024-11-28 03:04:34,390 INFO L226 Difference]: Without dead ends: 19184 [2024-11-28 03:04:34,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2386 GetRequests, 2381 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:34,398 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:34,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19184 states. [2024-11-28 03:04:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19184 to 19184. [2024-11-28 03:04:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19184 states, 18487 states have (on average 1.6010169308162492) internal successors, (29598), 18487 states have internal predecessors, (29598), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19184 states to 19184 states and 30988 transitions. [2024-11-28 03:04:34,714 INFO L78 Accepts]: Start accepts. Automaton has 19184 states and 30988 transitions. Word has length 2381 [2024-11-28 03:04:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:34,715 INFO L471 AbstractCegarLoop]: Abstraction has 19184 states and 30988 transitions. [2024-11-28 03:04:34,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19184 states and 30988 transitions. [2024-11-28 03:04:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2383 [2024-11-28 03:04:34,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:34,754 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:34,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-28 03:04:34,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:34,955 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:34,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:34,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1753944084, now seen corresponding path program 1 times [2024-11-28 03:04:34,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:34,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397880984] [2024-11-28 03:04:34,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:34,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:36,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397880984] [2024-11-28 03:04:36,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397880984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574373568] [2024-11-28 03:04:36,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:36,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:36,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:36,748 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:36,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-28 03:04:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:37,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 5238 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:04:37,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 17685 proven. 0 refuted. 0 times theorem prover too weak. 138555 trivial. 0 not checked. [2024-11-28 03:04:37,836 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574373568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:37,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:37,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:04:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134923435] [2024-11-28 03:04:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:37,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:04:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:37,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:04:37,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:37,839 INFO L87 Difference]: Start difference. First operand 19184 states and 30988 transitions. Second operand has 6 states, 5 states have (on average 198.2) internal successors, (991), 6 states have internal predecessors, (991), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:39,293 INFO L93 Difference]: Finished difference Result 26233 states and 41871 transitions. [2024-11-28 03:04:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 198.2) internal successors, (991), 6 states have internal predecessors, (991), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2382 [2024-11-28 03:04:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:39,314 INFO L225 Difference]: With dead ends: 26233 [2024-11-28 03:04:39,314 INFO L226 Difference]: Without dead ends: 19204 [2024-11-28 03:04:39,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2387 GetRequests, 2381 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:39,323 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:39,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:04:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19204 states. [2024-11-28 03:04:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19204 to 19204. [2024-11-28 03:04:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19204 states, 18507 states have (on average 1.6003674285405523) internal successors, (29618), 18507 states have internal predecessors, (29618), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19204 states to 19204 states and 31008 transitions. [2024-11-28 03:04:39,600 INFO L78 Accepts]: Start accepts. Automaton has 19204 states and 31008 transitions. Word has length 2382 [2024-11-28 03:04:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:39,602 INFO L471 AbstractCegarLoop]: Abstraction has 19204 states and 31008 transitions. [2024-11-28 03:04:39,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 198.2) internal successors, (991), 6 states have internal predecessors, (991), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 19204 states and 31008 transitions. [2024-11-28 03:04:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2384 [2024-11-28 03:04:39,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:39,639 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:39,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-28 03:04:39,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 03:04:39,840 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:39,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash -216096191, now seen corresponding path program 1 times [2024-11-28 03:04:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316852346] [2024-11-28 03:04:39,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:39,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:41,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:41,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316852346] [2024-11-28 03:04:41,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316852346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:41,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916310675] [2024-11-28 03:04:41,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:41,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:41,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:41,634 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:41,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-28 03:04:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:42,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 5241 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:42,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 17884 proven. 0 refuted. 0 times theorem prover too weak. 138356 trivial. 0 not checked. [2024-11-28 03:04:42,685 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:42,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916310675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:42,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:42,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:04:42,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093550286] [2024-11-28 03:04:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:42,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:42,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:42,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:42,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:42,688 INFO L87 Difference]: Start difference. First operand 19204 states and 31008 transitions. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:42,826 INFO L93 Difference]: Finished difference Result 26433 states and 42171 transitions. [2024-11-28 03:04:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2383 [2024-11-28 03:04:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:42,846 INFO L225 Difference]: With dead ends: 26433 [2024-11-28 03:04:42,846 INFO L226 Difference]: Without dead ends: 19294 [2024-11-28 03:04:42,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2388 GetRequests, 2382 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:42,854 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:42,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19294 states. [2024-11-28 03:04:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19294 to 19294. [2024-11-28 03:04:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19294 states, 18597 states have (on average 1.599612840780771) internal successors, (29748), 18597 states have internal predecessors, (29748), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19294 states to 19294 states and 31138 transitions. [2024-11-28 03:04:43,110 INFO L78 Accepts]: Start accepts. Automaton has 19294 states and 31138 transitions. Word has length 2383 [2024-11-28 03:04:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:43,111 INFO L471 AbstractCegarLoop]: Abstraction has 19294 states and 31138 transitions. [2024-11-28 03:04:43,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 19294 states and 31138 transitions. [2024-11-28 03:04:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2384 [2024-11-28 03:04:43,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:43,146 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:43,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-28 03:04:43,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-28 03:04:43,347 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:43,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1695056217, now seen corresponding path program 1 times [2024-11-28 03:04:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:43,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954260867] [2024-11-28 03:04:43,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:43,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954260867] [2024-11-28 03:04:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954260867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059352380] [2024-11-28 03:04:45,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:45,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:45,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:45,110 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:45,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-28 03:04:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:46,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 5241 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:04:46,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 17884 proven. 0 refuted. 0 times theorem prover too weak. 138356 trivial. 0 not checked. [2024-11-28 03:04:46,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:46,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059352380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:46,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:46,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:04:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821353142] [2024-11-28 03:04:46,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:46,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:04:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:46,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:04:46,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:46,159 INFO L87 Difference]: Start difference. First operand 19294 states and 31138 transitions. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:46,253 INFO L93 Difference]: Finished difference Result 26403 states and 42101 transitions. [2024-11-28 03:04:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:04:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2383 [2024-11-28 03:04:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:46,274 INFO L225 Difference]: With dead ends: 26403 [2024-11-28 03:04:46,274 INFO L226 Difference]: Without dead ends: 19304 [2024-11-28 03:04:46,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2388 GetRequests, 2383 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:46,283 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:46,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19304 states. [2024-11-28 03:04:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19304 to 19304. [2024-11-28 03:04:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19304 states, 18607 states have (on average 1.5987531574138765) internal successors, (29748), 18607 states have internal predecessors, (29748), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19304 states to 19304 states and 31138 transitions. [2024-11-28 03:04:46,563 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 31138 transitions. Word has length 2383 [2024-11-28 03:04:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:46,564 INFO L471 AbstractCegarLoop]: Abstraction has 19304 states and 31138 transitions. [2024-11-28 03:04:46,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 31138 transitions. [2024-11-28 03:04:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2385 [2024-11-28 03:04:46,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:46,600 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:46,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-28 03:04:46,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 03:04:46,801 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:46,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -886293158, now seen corresponding path program 1 times [2024-11-28 03:04:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88683525] [2024-11-28 03:04:46,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88683525] [2024-11-28 03:04:48,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88683525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924691297] [2024-11-28 03:04:48,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:48,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:48,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:48,576 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:48,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-28 03:04:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:49,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 5244 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:04:49,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 18670 proven. 0 refuted. 0 times theorem prover too weak. 137570 trivial. 0 not checked. [2024-11-28 03:04:49,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:49,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924691297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:49,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:49,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:04:49,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142265052] [2024-11-28 03:04:49,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:49,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:04:49,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:49,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:04:49,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:49,646 INFO L87 Difference]: Start difference. First operand 19304 states and 31138 transitions. Second operand has 6 states, 5 states have (on average 198.6) internal successors, (993), 6 states have internal predecessors, (993), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:51,090 INFO L93 Difference]: Finished difference Result 26823 states and 42751 transitions. [2024-11-28 03:04:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 198.6) internal successors, (993), 6 states have internal predecessors, (993), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2384 [2024-11-28 03:04:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:51,111 INFO L225 Difference]: With dead ends: 26823 [2024-11-28 03:04:51,111 INFO L226 Difference]: Without dead ends: 19324 [2024-11-28 03:04:51,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2389 GetRequests, 2383 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:51,120 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:51,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:04:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19324 states. [2024-11-28 03:04:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19324 to 19324. [2024-11-28 03:04:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19324 states, 18627 states have (on average 1.5981102700381167) internal successors, (29768), 18627 states have internal predecessors, (29768), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 31158 transitions. [2024-11-28 03:04:51,399 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 31158 transitions. Word has length 2384 [2024-11-28 03:04:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:51,400 INFO L471 AbstractCegarLoop]: Abstraction has 19324 states and 31158 transitions. [2024-11-28 03:04:51,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 198.6) internal successors, (993), 6 states have internal predecessors, (993), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:04:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 31158 transitions. [2024-11-28 03:04:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2386 [2024-11-28 03:04:51,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:51,439 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:51,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-28 03:04:51,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-28 03:04:51,640 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:51,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1912448843, now seen corresponding path program 1 times [2024-11-28 03:04:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929561114] [2024-11-28 03:04:51,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929561114] [2024-11-28 03:04:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929561114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504871595] [2024-11-28 03:04:53,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:53,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:53,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:53,484 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:53,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-28 03:04:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:54,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 5247 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:54,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 18864 proven. 0 refuted. 0 times theorem prover too weak. 137376 trivial. 0 not checked. [2024-11-28 03:04:54,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504871595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:54,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:54,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:04:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290903809] [2024-11-28 03:04:54,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:54,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:54,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:54,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:54,545 INFO L87 Difference]: Start difference. First operand 19324 states and 31158 transitions. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:54,656 INFO L93 Difference]: Finished difference Result 27023 states and 43051 transitions. [2024-11-28 03:04:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2385 [2024-11-28 03:04:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:54,677 INFO L225 Difference]: With dead ends: 27023 [2024-11-28 03:04:54,677 INFO L226 Difference]: Without dead ends: 19414 [2024-11-28 03:04:54,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2390 GetRequests, 2384 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:54,686 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:54,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19414 states. [2024-11-28 03:04:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19414 to 19414. [2024-11-28 03:04:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19414 states, 18717 states have (on average 1.597371373617567) internal successors, (29898), 18717 states have internal predecessors, (29898), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19414 states to 19414 states and 31288 transitions. [2024-11-28 03:04:54,960 INFO L78 Accepts]: Start accepts. Automaton has 19414 states and 31288 transitions. Word has length 2385 [2024-11-28 03:04:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 19414 states and 31288 transitions. [2024-11-28 03:04:54,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 19414 states and 31288 transitions. [2024-11-28 03:04:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2386 [2024-11-28 03:04:54,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:54,996 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:55,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-28 03:04:55,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:55,196 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:55,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:55,197 INFO L85 PathProgramCache]: Analyzing trace with hash -975214961, now seen corresponding path program 1 times [2024-11-28 03:04:55,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999949235] [2024-11-28 03:04:55,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:04:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999949235] [2024-11-28 03:04:57,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999949235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366870215] [2024-11-28 03:04:57,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:57,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:57,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:57,028 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:57,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-28 03:04:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:58,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 5247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:04:58,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 18864 proven. 0 refuted. 0 times theorem prover too weak. 137376 trivial. 0 not checked. [2024-11-28 03:04:58,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366870215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:58,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:04:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140786038] [2024-11-28 03:04:58,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:58,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:04:58,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:58,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:04:58,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:58,079 INFO L87 Difference]: Start difference. First operand 19414 states and 31288 transitions. Second operand has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:58,170 INFO L93 Difference]: Finished difference Result 26993 states and 42981 transitions. [2024-11-28 03:04:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:04:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2385 [2024-11-28 03:04:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:58,190 INFO L225 Difference]: With dead ends: 26993 [2024-11-28 03:04:58,190 INFO L226 Difference]: Without dead ends: 19424 [2024-11-28 03:04:58,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2390 GetRequests, 2385 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:58,198 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:58,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:04:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19424 states. [2024-11-28 03:04:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19424 to 19424. [2024-11-28 03:04:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19424 states, 18727 states have (on average 1.5965183958989695) internal successors, (29898), 18727 states have internal predecessors, (29898), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:04:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19424 states to 19424 states and 31288 transitions. [2024-11-28 03:04:58,465 INFO L78 Accepts]: Start accepts. Automaton has 19424 states and 31288 transitions. Word has length 2385 [2024-11-28 03:04:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:58,466 INFO L471 AbstractCegarLoop]: Abstraction has 19424 states and 31288 transitions. [2024-11-28 03:04:58,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:04:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 19424 states and 31288 transitions. [2024-11-28 03:04:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2387 [2024-11-28 03:04:58,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:58,502 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:58,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-11-28 03:04:58,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:58,702 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:58,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash -698195116, now seen corresponding path program 1 times [2024-11-28 03:04:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:58,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478130128] [2024-11-28 03:04:58,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478130128] [2024-11-28 03:05:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478130128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465731786] [2024-11-28 03:05:00,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:00,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:00,492 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:00,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-28 03:05:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:01,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 5250 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:05:01,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 19647 proven. 0 refuted. 0 times theorem prover too weak. 136593 trivial. 0 not checked. [2024-11-28 03:05:01,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465731786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:01,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:05:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191508357] [2024-11-28 03:05:01,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:01,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:01,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:01,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:01,579 INFO L87 Difference]: Start difference. First operand 19424 states and 31288 transitions. Second operand has 6 states, 5 states have (on average 199.0) internal successors, (995), 6 states have internal predecessors, (995), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:03,016 INFO L93 Difference]: Finished difference Result 27413 states and 43631 transitions. [2024-11-28 03:05:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:05:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 199.0) internal successors, (995), 6 states have internal predecessors, (995), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2386 [2024-11-28 03:05:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:03,036 INFO L225 Difference]: With dead ends: 27413 [2024-11-28 03:05:03,036 INFO L226 Difference]: Without dead ends: 19444 [2024-11-28 03:05:03,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2391 GetRequests, 2385 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:03,046 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:03,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:05:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19444 states. [2024-11-28 03:05:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19444 to 19444. [2024-11-28 03:05:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19444 states, 18747 states have (on average 1.5958820077879128) internal successors, (29918), 18747 states have internal predecessors, (29918), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19444 states to 19444 states and 31308 transitions. [2024-11-28 03:05:03,328 INFO L78 Accepts]: Start accepts. Automaton has 19444 states and 31308 transitions. Word has length 2386 [2024-11-28 03:05:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:03,329 INFO L471 AbstractCegarLoop]: Abstraction has 19444 states and 31308 transitions. [2024-11-28 03:05:03,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 199.0) internal successors, (995), 6 states have internal predecessors, (995), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 19444 states and 31308 transitions. [2024-11-28 03:05:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2388 [2024-11-28 03:05:03,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:03,447 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:03,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-28 03:05:03,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:03,647 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:03,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash 568472931, now seen corresponding path program 1 times [2024-11-28 03:05:03,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53442499] [2024-11-28 03:05:03,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:03,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53442499] [2024-11-28 03:05:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53442499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410019372] [2024-11-28 03:05:05,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:05,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:05,434 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:05,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-28 03:05:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:06,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 5253 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:05:06,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 19836 proven. 0 refuted. 0 times theorem prover too weak. 136404 trivial. 0 not checked. [2024-11-28 03:05:06,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410019372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:06,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:06,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:05:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886114987] [2024-11-28 03:05:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:06,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:05:06,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:06,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:05:06,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:06,474 INFO L87 Difference]: Start difference. First operand 19444 states and 31308 transitions. Second operand has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:06,567 INFO L93 Difference]: Finished difference Result 27453 states and 43681 transitions. [2024-11-28 03:05:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:05:06,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2387 [2024-11-28 03:05:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:06,587 INFO L225 Difference]: With dead ends: 27453 [2024-11-28 03:05:06,587 INFO L226 Difference]: Without dead ends: 19454 [2024-11-28 03:05:06,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2392 GetRequests, 2387 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:06,597 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:06,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19454 states. [2024-11-28 03:05:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19454 to 19454. [2024-11-28 03:05:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19454 states, 18757 states have (on average 1.5955643226528762) internal successors, (29928), 18757 states have internal predecessors, (29928), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19454 states to 19454 states and 31318 transitions. [2024-11-28 03:05:06,863 INFO L78 Accepts]: Start accepts. Automaton has 19454 states and 31318 transitions. Word has length 2387 [2024-11-28 03:05:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:06,864 INFO L471 AbstractCegarLoop]: Abstraction has 19454 states and 31318 transitions. [2024-11-28 03:05:06,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 19454 states and 31318 transitions. [2024-11-28 03:05:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2388 [2024-11-28 03:05:06,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:06,977 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:06,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-28 03:05:07,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:07,178 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:07,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash 824956285, now seen corresponding path program 1 times [2024-11-28 03:05:07,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:07,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783470372] [2024-11-28 03:05:07,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:08,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783470372] [2024-11-28 03:05:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783470372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780227781] [2024-11-28 03:05:08,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:08,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:08,910 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:08,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-28 03:05:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:09,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 5253 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:05:09,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 19836 proven. 0 refuted. 0 times theorem prover too weak. 136404 trivial. 0 not checked. [2024-11-28 03:05:09,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:09,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780227781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:09,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:09,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:05:09,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655757710] [2024-11-28 03:05:09,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:09,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:05:09,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:09,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:05:09,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:09,959 INFO L87 Difference]: Start difference. First operand 19454 states and 31318 transitions. Second operand has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:10,070 INFO L93 Difference]: Finished difference Result 27643 states and 43961 transitions. [2024-11-28 03:05:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:05:10,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2387 [2024-11-28 03:05:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:10,091 INFO L225 Difference]: With dead ends: 27643 [2024-11-28 03:05:10,091 INFO L226 Difference]: Without dead ends: 19544 [2024-11-28 03:05:10,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2392 GetRequests, 2386 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:10,100 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:10,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19544 states. [2024-11-28 03:05:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19544 to 19544. [2024-11-28 03:05:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19544 states, 18847 states have (on average 1.5943120921101501) internal successors, (30048), 18847 states have internal predecessors, (30048), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19544 states to 19544 states and 31438 transitions. [2024-11-28 03:05:10,379 INFO L78 Accepts]: Start accepts. Automaton has 19544 states and 31438 transitions. Word has length 2387 [2024-11-28 03:05:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:10,380 INFO L471 AbstractCegarLoop]: Abstraction has 19544 states and 31438 transitions. [2024-11-28 03:05:10,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 19544 states and 31438 transitions. [2024-11-28 03:05:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2389 [2024-11-28 03:05:10,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:10,500 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:10,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-11-28 03:05:10,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:10,700 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:10,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -486890598, now seen corresponding path program 1 times [2024-11-28 03:05:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012551995] [2024-11-28 03:05:10,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:12,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012551995] [2024-11-28 03:05:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012551995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130851559] [2024-11-28 03:05:12,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:12,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:12,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:12,459 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:12,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-28 03:05:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:13,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 5256 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:05:13,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 20616 proven. 0 refuted. 0 times theorem prover too weak. 135624 trivial. 0 not checked. [2024-11-28 03:05:13,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:13,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130851559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:13,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:13,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:05:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692488187] [2024-11-28 03:05:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:13,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:13,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:13,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:13,505 INFO L87 Difference]: Start difference. First operand 19544 states and 31438 transitions. Second operand has 6 states, 5 states have (on average 199.4) internal successors, (997), 6 states have internal predecessors, (997), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:14,849 INFO L93 Difference]: Finished difference Result 28003 states and 44511 transitions. [2024-11-28 03:05:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:05:14,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 199.4) internal successors, (997), 6 states have internal predecessors, (997), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2388 [2024-11-28 03:05:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:14,869 INFO L225 Difference]: With dead ends: 28003 [2024-11-28 03:05:14,869 INFO L226 Difference]: Without dead ends: 19564 [2024-11-28 03:05:14,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2393 GetRequests, 2387 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:14,878 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:14,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:05:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19564 states. [2024-11-28 03:05:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19564 to 19564. [2024-11-28 03:05:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19564 states, 18867 states have (on average 1.5936820904224307) internal successors, (30068), 18867 states have internal predecessors, (30068), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19564 states to 19564 states and 31458 transitions. [2024-11-28 03:05:15,244 INFO L78 Accepts]: Start accepts. Automaton has 19564 states and 31458 transitions. Word has length 2388 [2024-11-28 03:05:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:15,245 INFO L471 AbstractCegarLoop]: Abstraction has 19564 states and 31458 transitions. [2024-11-28 03:05:15,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 199.4) internal successors, (997), 6 states have internal predecessors, (997), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 19564 states and 31458 transitions. [2024-11-28 03:05:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2390 [2024-11-28 03:05:15,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:15,282 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:15,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-28 03:05:15,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-11-28 03:05:15,483 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:15,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1767678201, now seen corresponding path program 1 times [2024-11-28 03:05:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:15,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199498982] [2024-11-28 03:05:15,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:17,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199498982] [2024-11-28 03:05:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199498982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612203305] [2024-11-28 03:05:17,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:17,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:17,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:17,227 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:17,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-28 03:05:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:18,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 5259 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:05:18,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 20800 proven. 0 refuted. 0 times theorem prover too weak. 135440 trivial. 0 not checked. [2024-11-28 03:05:18,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:18,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612203305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:18,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:18,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:05:18,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426433773] [2024-11-28 03:05:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:18,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:05:18,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:18,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:05:18,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:18,282 INFO L87 Difference]: Start difference. First operand 19564 states and 31458 transitions. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:18,393 INFO L93 Difference]: Finished difference Result 28203 states and 44811 transitions. [2024-11-28 03:05:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:05:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2389 [2024-11-28 03:05:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:18,413 INFO L225 Difference]: With dead ends: 28203 [2024-11-28 03:05:18,413 INFO L226 Difference]: Without dead ends: 19654 [2024-11-28 03:05:18,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2394 GetRequests, 2388 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:18,422 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:18,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19654 states. [2024-11-28 03:05:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19654 to 19654. [2024-11-28 03:05:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19654 states, 18957 states have (on average 1.5929735717676847) internal successors, (30198), 18957 states have internal predecessors, (30198), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19654 states to 19654 states and 31588 transitions. [2024-11-28 03:05:18,772 INFO L78 Accepts]: Start accepts. Automaton has 19654 states and 31588 transitions. Word has length 2389 [2024-11-28 03:05:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:18,773 INFO L471 AbstractCegarLoop]: Abstraction has 19654 states and 31588 transitions. [2024-11-28 03:05:18,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19654 states and 31588 transitions. [2024-11-28 03:05:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2390 [2024-11-28 03:05:18,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:18,810 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:18,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-28 03:05:19,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-11-28 03:05:19,010 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:19,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 182090579, now seen corresponding path program 1 times [2024-11-28 03:05:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43331185] [2024-11-28 03:05:19,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:19,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43331185] [2024-11-28 03:05:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43331185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665315288] [2024-11-28 03:05:20,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:20,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:20,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:20,813 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:20,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-28 03:05:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:21,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 5259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:05:21,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 20800 proven. 0 refuted. 0 times theorem prover too weak. 135440 trivial. 0 not checked. [2024-11-28 03:05:21,907 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:21,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665315288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:21,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:05:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351344121] [2024-11-28 03:05:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:21,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:05:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:21,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:05:21,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:21,911 INFO L87 Difference]: Start difference. First operand 19654 states and 31588 transitions. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:22,055 INFO L93 Difference]: Finished difference Result 28173 states and 44741 transitions. [2024-11-28 03:05:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:05:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2389 [2024-11-28 03:05:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:22,076 INFO L225 Difference]: With dead ends: 28173 [2024-11-28 03:05:22,076 INFO L226 Difference]: Without dead ends: 19664 [2024-11-28 03:05:22,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2394 GetRequests, 2389 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:22,085 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:22,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19664 states. [2024-11-28 03:05:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19664 to 19664. [2024-11-28 03:05:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19664 states, 18967 states have (on average 1.5921337059102652) internal successors, (30198), 18967 states have internal predecessors, (30198), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19664 states to 19664 states and 31588 transitions. [2024-11-28 03:05:22,443 INFO L78 Accepts]: Start accepts. Automaton has 19664 states and 31588 transitions. Word has length 2389 [2024-11-28 03:05:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:22,444 INFO L471 AbstractCegarLoop]: Abstraction has 19664 states and 31588 transitions. [2024-11-28 03:05:22,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 19664 states and 31588 transitions. [2024-11-28 03:05:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2391 [2024-11-28 03:05:22,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:22,483 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:22,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-11-28 03:05:22,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:22,683 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:22,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:22,684 INFO L85 PathProgramCache]: Analyzing trace with hash 409355924, now seen corresponding path program 1 times [2024-11-28 03:05:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:22,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276551291] [2024-11-28 03:05:22,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:22,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276551291] [2024-11-28 03:05:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276551291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370285387] [2024-11-28 03:05:24,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:24,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:24,535 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:24,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-28 03:05:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:25,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 5262 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:05:25,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 21577 proven. 0 refuted. 0 times theorem prover too weak. 134663 trivial. 0 not checked. [2024-11-28 03:05:25,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:25,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370285387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:25,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:25,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:05:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273505553] [2024-11-28 03:05:25,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:25,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:25,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:25,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:25,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:25,613 INFO L87 Difference]: Start difference. First operand 19664 states and 31588 transitions. Second operand has 6 states, 5 states have (on average 199.8) internal successors, (999), 6 states have internal predecessors, (999), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:26,949 INFO L93 Difference]: Finished difference Result 28593 states and 45391 transitions. [2024-11-28 03:05:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:05:26,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 199.8) internal successors, (999), 6 states have internal predecessors, (999), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2390 [2024-11-28 03:05:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:26,970 INFO L225 Difference]: With dead ends: 28593 [2024-11-28 03:05:26,970 INFO L226 Difference]: Without dead ends: 19684 [2024-11-28 03:05:26,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2395 GetRequests, 2389 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:26,980 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:26,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:05:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19684 states. [2024-11-28 03:05:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19684 to 19684. [2024-11-28 03:05:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19684 states, 18987 states have (on average 1.5915099805129826) internal successors, (30218), 18987 states have internal predecessors, (30218), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19684 states to 19684 states and 31608 transitions. [2024-11-28 03:05:27,345 INFO L78 Accepts]: Start accepts. Automaton has 19684 states and 31608 transitions. Word has length 2390 [2024-11-28 03:05:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:27,346 INFO L471 AbstractCegarLoop]: Abstraction has 19684 states and 31608 transitions. [2024-11-28 03:05:27,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 199.8) internal successors, (999), 6 states have internal predecessors, (999), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 19684 states and 31608 transitions. [2024-11-28 03:05:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2392 [2024-11-28 03:05:27,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:27,385 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:27,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-28 03:05:27,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:27,586 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:27,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash 844807865, now seen corresponding path program 1 times [2024-11-28 03:05:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982707469] [2024-11-28 03:05:27,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:29,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982707469] [2024-11-28 03:05:29,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982707469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:29,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639384511] [2024-11-28 03:05:29,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:29,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:29,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:29,382 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:29,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-28 03:05:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:30,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 5265 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:05:30,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 21756 proven. 0 refuted. 0 times theorem prover too weak. 134484 trivial. 0 not checked. [2024-11-28 03:05:30,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639384511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:30,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:30,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:05:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536741043] [2024-11-28 03:05:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:30,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:05:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:30,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:05:30,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:30,430 INFO L87 Difference]: Start difference. First operand 19684 states and 31608 transitions. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:30,624 INFO L93 Difference]: Finished difference Result 28793 states and 45691 transitions. [2024-11-28 03:05:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:05:30,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2391 [2024-11-28 03:05:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:30,643 INFO L225 Difference]: With dead ends: 28793 [2024-11-28 03:05:30,643 INFO L226 Difference]: Without dead ends: 19774 [2024-11-28 03:05:30,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2396 GetRequests, 2390 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:30,649 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:30,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19774 states. [2024-11-28 03:05:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19774 to 19774. [2024-11-28 03:05:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19774 states, 19077 states have (on average 1.5908161660638465) internal successors, (30348), 19077 states have internal predecessors, (30348), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19774 states to 19774 states and 31738 transitions. [2024-11-28 03:05:30,899 INFO L78 Accepts]: Start accepts. Automaton has 19774 states and 31738 transitions. Word has length 2391 [2024-11-28 03:05:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:30,900 INFO L471 AbstractCegarLoop]: Abstraction has 19774 states and 31738 transitions. [2024-11-28 03:05:30,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand 19774 states and 31738 transitions. [2024-11-28 03:05:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2392 [2024-11-28 03:05:30,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:30,938 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:30,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-11-28 03:05:31,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:31,139 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:31,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -584056289, now seen corresponding path program 1 times [2024-11-28 03:05:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18495836] [2024-11-28 03:05:31,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:31,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:32,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18495836] [2024-11-28 03:05:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18495836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948548724] [2024-11-28 03:05:32,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:32,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:32,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:32,919 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:32,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-11-28 03:05:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:33,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 5265 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:05:33,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 21756 proven. 0 refuted. 0 times theorem prover too weak. 134484 trivial. 0 not checked. [2024-11-28 03:05:33,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:33,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948548724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:33,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:33,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:05:33,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464134745] [2024-11-28 03:05:33,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:33,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:05:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:33,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:05:33,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:33,978 INFO L87 Difference]: Start difference. First operand 19774 states and 31738 transitions. Second operand has 3 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:34,162 INFO L93 Difference]: Finished difference Result 28763 states and 45621 transitions. [2024-11-28 03:05:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:05:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2391 [2024-11-28 03:05:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:34,180 INFO L225 Difference]: With dead ends: 28763 [2024-11-28 03:05:34,180 INFO L226 Difference]: Without dead ends: 19784 [2024-11-28 03:05:34,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2396 GetRequests, 2391 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:34,187 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:34,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19784 states. [2024-11-28 03:05:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19784 to 19784. [2024-11-28 03:05:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19784 states, 19087 states have (on average 1.5899827107455335) internal successors, (30348), 19087 states have internal predecessors, (30348), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19784 states to 19784 states and 31738 transitions. [2024-11-28 03:05:34,448 INFO L78 Accepts]: Start accepts. Automaton has 19784 states and 31738 transitions. Word has length 2391 [2024-11-28 03:05:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:34,449 INFO L471 AbstractCegarLoop]: Abstraction has 19784 states and 31738 transitions. [2024-11-28 03:05:34,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 19784 states and 31738 transitions. [2024-11-28 03:05:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2393 [2024-11-28 03:05:34,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:34,489 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:34,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-11-28 03:05:34,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:34,689 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:34,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1193398708, now seen corresponding path program 1 times [2024-11-28 03:05:34,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:34,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287025318] [2024-11-28 03:05:34,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:36,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287025318] [2024-11-28 03:05:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287025318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975314851] [2024-11-28 03:05:36,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:36,521 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:36,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-11-28 03:05:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:37,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 5268 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:05:37,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 21756 proven. 0 refuted. 0 times theorem prover too weak. 134484 trivial. 0 not checked. [2024-11-28 03:05:37,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:37,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975314851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:37,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:37,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:05:37,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733672681] [2024-11-28 03:05:37,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:37,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:05:37,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:37,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:05:37,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:37,615 INFO L87 Difference]: Start difference. First operand 19784 states and 31738 transitions. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:37,789 INFO L93 Difference]: Finished difference Result 28853 states and 45751 transitions. [2024-11-28 03:05:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:05:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2392 [2024-11-28 03:05:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:37,806 INFO L225 Difference]: With dead ends: 28853 [2024-11-28 03:05:37,806 INFO L226 Difference]: Without dead ends: 19794 [2024-11-28 03:05:37,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2397 GetRequests, 2392 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:37,815 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:37,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19794 states. [2024-11-28 03:05:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19794 to 19794. [2024-11-28 03:05:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19794 states, 19097 states have (on average 1.5896737707493322) internal successors, (30358), 19097 states have internal predecessors, (30358), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19794 states to 19794 states and 31748 transitions. [2024-11-28 03:05:38,061 INFO L78 Accepts]: Start accepts. Automaton has 19794 states and 31748 transitions. Word has length 2392 [2024-11-28 03:05:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:38,062 INFO L471 AbstractCegarLoop]: Abstraction has 19794 states and 31748 transitions. [2024-11-28 03:05:38,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19794 states and 31748 transitions. [2024-11-28 03:05:38,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2393 [2024-11-28 03:05:38,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:38,096 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:38,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-11-28 03:05:38,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:38,296 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:38,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -63981094, now seen corresponding path program 1 times [2024-11-28 03:05:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545823873] [2024-11-28 03:05:38,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:40,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:40,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545823873] [2024-11-28 03:05:40,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545823873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:40,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371007394] [2024-11-28 03:05:40,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:40,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:40,047 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:40,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-11-28 03:05:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:41,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 5268 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:05:41,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 22530 proven. 0 refuted. 0 times theorem prover too weak. 133710 trivial. 0 not checked. [2024-11-28 03:05:41,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371007394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:41,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:05:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720798748] [2024-11-28 03:05:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:41,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:41,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:41,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:41,173 INFO L87 Difference]: Start difference. First operand 19794 states and 31748 transitions. Second operand has 6 states, 5 states have (on average 200.2) internal successors, (1001), 6 states have internal predecessors, (1001), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:42,650 INFO L93 Difference]: Finished difference Result 29203 states and 46291 transitions. [2024-11-28 03:05:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:05:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 200.2) internal successors, (1001), 6 states have internal predecessors, (1001), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2392 [2024-11-28 03:05:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:42,672 INFO L225 Difference]: With dead ends: 29203 [2024-11-28 03:05:42,672 INFO L226 Difference]: Without dead ends: 19814 [2024-11-28 03:05:42,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2397 GetRequests, 2391 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:42,682 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:42,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:05:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19814 states. [2024-11-28 03:05:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19814 to 19814. [2024-11-28 03:05:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19814 states, 19117 states have (on average 1.5890568603860438) internal successors, (30378), 19117 states have internal predecessors, (30378), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19814 states to 19814 states and 31768 transitions. [2024-11-28 03:05:42,978 INFO L78 Accepts]: Start accepts. Automaton has 19814 states and 31768 transitions. Word has length 2392 [2024-11-28 03:05:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:42,979 INFO L471 AbstractCegarLoop]: Abstraction has 19814 states and 31768 transitions. [2024-11-28 03:05:42,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 200.2) internal successors, (1001), 6 states have internal predecessors, (1001), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 19814 states and 31768 transitions. [2024-11-28 03:05:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2394 [2024-11-28 03:05:43,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:43,019 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:43,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-11-28 03:05:43,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:43,220 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:43,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash -161393859, now seen corresponding path program 1 times [2024-11-28 03:05:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:43,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523454780] [2024-11-28 03:05:43,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:43,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:45,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523454780] [2024-11-28 03:05:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523454780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630682223] [2024-11-28 03:05:45,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:45,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:45,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:45,006 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:45,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-11-28 03:05:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:46,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 5271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:05:46,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 22704 proven. 0 refuted. 0 times theorem prover too weak. 133536 trivial. 0 not checked. [2024-11-28 03:05:46,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630682223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:05:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301428997] [2024-11-28 03:05:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:46,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:05:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:46,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:05:46,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:46,196 INFO L87 Difference]: Start difference. First operand 19814 states and 31768 transitions. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:46,328 INFO L93 Difference]: Finished difference Result 29403 states and 46591 transitions. [2024-11-28 03:05:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:05:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2393 [2024-11-28 03:05:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:46,353 INFO L225 Difference]: With dead ends: 29403 [2024-11-28 03:05:46,353 INFO L226 Difference]: Without dead ends: 19904 [2024-11-28 03:05:46,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2398 GetRequests, 2392 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:46,363 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:46,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19904 states. [2024-11-28 03:05:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19904 to 19904. [2024-11-28 03:05:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19904 states, 19207 states have (on average 1.5883792367366065) internal successors, (30508), 19207 states have internal predecessors, (30508), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19904 states to 19904 states and 31898 transitions. [2024-11-28 03:05:46,699 INFO L78 Accepts]: Start accepts. Automaton has 19904 states and 31898 transitions. Word has length 2393 [2024-11-28 03:05:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:46,701 INFO L471 AbstractCegarLoop]: Abstraction has 19904 states and 31898 transitions. [2024-11-28 03:05:46,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 19904 states and 31898 transitions. [2024-11-28 03:05:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2394 [2024-11-28 03:05:46,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:46,746 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:46,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-11-28 03:05:46,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-11-28 03:05:46,947 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:46,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash 251828759, now seen corresponding path program 1 times [2024-11-28 03:05:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533694799] [2024-11-28 03:05:46,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:46,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533694799] [2024-11-28 03:05:48,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533694799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090853237] [2024-11-28 03:05:48,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:48,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:48,932 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:48,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-11-28 03:05:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:50,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 5271 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:05:50,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 22704 proven. 0 refuted. 0 times theorem prover too weak. 133536 trivial. 0 not checked. [2024-11-28 03:05:50,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090853237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:05:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588334736] [2024-11-28 03:05:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:50,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:05:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:50,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:05:50,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:50,145 INFO L87 Difference]: Start difference. First operand 19904 states and 31898 transitions. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:50,246 INFO L93 Difference]: Finished difference Result 29373 states and 46521 transitions. [2024-11-28 03:05:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:05:50,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2393 [2024-11-28 03:05:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:50,269 INFO L225 Difference]: With dead ends: 29373 [2024-11-28 03:05:50,269 INFO L226 Difference]: Without dead ends: 19914 [2024-11-28 03:05:50,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2398 GetRequests, 2393 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:50,279 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:50,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19914 states. [2024-11-28 03:05:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19914 to 19914. [2024-11-28 03:05:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19914 states, 19217 states have (on average 1.5875526877244106) internal successors, (30508), 19217 states have internal predecessors, (30508), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19914 states to 19914 states and 31898 transitions. [2024-11-28 03:05:50,609 INFO L78 Accepts]: Start accepts. Automaton has 19914 states and 31898 transitions. Word has length 2393 [2024-11-28 03:05:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:50,611 INFO L471 AbstractCegarLoop]: Abstraction has 19914 states and 31898 transitions. [2024-11-28 03:05:50,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 19914 states and 31898 transitions. [2024-11-28 03:05:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2395 [2024-11-28 03:05:50,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:50,676 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:50,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-11-28 03:05:50,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2024-11-28 03:05:50,876 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:50,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash -873023020, now seen corresponding path program 1 times [2024-11-28 03:05:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:50,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713179231] [2024-11-28 03:05:50,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713179231] [2024-11-28 03:05:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713179231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829372818] [2024-11-28 03:05:52,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:52,748 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:52,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-11-28 03:05:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:53,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:05:53,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 23475 proven. 0 refuted. 0 times theorem prover too weak. 132765 trivial. 0 not checked. [2024-11-28 03:05:54,006 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829372818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:54,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:05:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354991383] [2024-11-28 03:05:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:54,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:54,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:54,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:54,009 INFO L87 Difference]: Start difference. First operand 19914 states and 31898 transitions. Second operand has 6 states, 5 states have (on average 200.6) internal successors, (1003), 6 states have internal predecessors, (1003), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:55,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:55,502 INFO L93 Difference]: Finished difference Result 29793 states and 47171 transitions. [2024-11-28 03:05:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:05:55,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 200.6) internal successors, (1003), 6 states have internal predecessors, (1003), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2394 [2024-11-28 03:05:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:55,527 INFO L225 Difference]: With dead ends: 29793 [2024-11-28 03:05:55,527 INFO L226 Difference]: Without dead ends: 19934 [2024-11-28 03:05:55,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2399 GetRequests, 2393 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:55,538 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:55,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:05:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19934 states. [2024-11-28 03:05:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19934 to 19934. [2024-11-28 03:05:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19934 states, 19237 states have (on average 1.5869418308468057) internal successors, (30528), 19237 states have internal predecessors, (30528), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19934 states to 19934 states and 31918 transitions. [2024-11-28 03:05:55,846 INFO L78 Accepts]: Start accepts. Automaton has 19934 states and 31918 transitions. Word has length 2394 [2024-11-28 03:05:55,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:55,847 INFO L471 AbstractCegarLoop]: Abstraction has 19934 states and 31918 transitions. [2024-11-28 03:05:55,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 200.6) internal successors, (1003), 6 states have internal predecessors, (1003), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:05:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19934 states and 31918 transitions. [2024-11-28 03:05:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2396 [2024-11-28 03:05:55,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:55,893 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:55,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-11-28 03:05:56,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-11-28 03:05:56,094 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:56,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash -292774411, now seen corresponding path program 1 times [2024-11-28 03:05:56,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:56,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115207660] [2024-11-28 03:05:56,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:05:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115207660] [2024-11-28 03:05:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115207660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314958156] [2024-11-28 03:05:57,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:57,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:57,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:57,939 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:58,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-11-28 03:05:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:59,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 5277 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:05:59,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 23644 proven. 0 refuted. 0 times theorem prover too weak. 132596 trivial. 0 not checked. [2024-11-28 03:05:59,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314958156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:59,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:05:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260588121] [2024-11-28 03:05:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:59,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:05:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:59,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:05:59,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:59,273 INFO L87 Difference]: Start difference. First operand 19934 states and 31918 transitions. Second operand has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:59,457 INFO L93 Difference]: Finished difference Result 29993 states and 47471 transitions. [2024-11-28 03:05:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:05:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2395 [2024-11-28 03:05:59,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:59,484 INFO L225 Difference]: With dead ends: 29993 [2024-11-28 03:05:59,484 INFO L226 Difference]: Without dead ends: 20024 [2024-11-28 03:05:59,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 2394 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:59,497 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:59,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20024 states. [2024-11-28 03:05:59,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20024 to 20024. [2024-11-28 03:05:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 19327 states have (on average 1.5862782635691002) internal successors, (30658), 19327 states have internal predecessors, (30658), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:05:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 32048 transitions. [2024-11-28 03:05:59,997 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 32048 transitions. Word has length 2395 [2024-11-28 03:05:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:59,999 INFO L471 AbstractCegarLoop]: Abstraction has 20024 states and 32048 transitions. [2024-11-28 03:05:59,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:05:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 32048 transitions. [2024-11-28 03:06:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2396 [2024-11-28 03:06:00,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:00,041 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:00,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:00,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:00,241 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:00,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 683287771, now seen corresponding path program 1 times [2024-11-28 03:06:00,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541536359] [2024-11-28 03:06:00,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541536359] [2024-11-28 03:06:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541536359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831164995] [2024-11-28 03:06:02,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:02,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:02,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:02,095 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:02,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-11-28 03:06:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:03,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 5277 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:06:03,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 23644 proven. 0 refuted. 0 times theorem prover too weak. 132596 trivial. 0 not checked. [2024-11-28 03:06:03,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:03,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831164995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:03,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:03,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:06:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531443663] [2024-11-28 03:06:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:03,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:03,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:03,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:03,205 INFO L87 Difference]: Start difference. First operand 20024 states and 32048 transitions. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:03,418 INFO L93 Difference]: Finished difference Result 29963 states and 47401 transitions. [2024-11-28 03:06:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:03,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2395 [2024-11-28 03:06:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:03,436 INFO L225 Difference]: With dead ends: 29963 [2024-11-28 03:06:03,436 INFO L226 Difference]: Without dead ends: 20034 [2024-11-28 03:06:03,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 2395 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:03,443 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:03,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20034 states. [2024-11-28 03:06:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20034 to 20034. [2024-11-28 03:06:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20034 states, 19337 states have (on average 1.5854579303925118) internal successors, (30658), 19337 states have internal predecessors, (30658), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20034 states to 20034 states and 32048 transitions. [2024-11-28 03:06:03,775 INFO L78 Accepts]: Start accepts. Automaton has 20034 states and 32048 transitions. Word has length 2395 [2024-11-28 03:06:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:03,776 INFO L471 AbstractCegarLoop]: Abstraction has 20034 states and 32048 transitions. [2024-11-28 03:06:03,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 20034 states and 32048 transitions. [2024-11-28 03:06:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2397 [2024-11-28 03:06:03,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:03,819 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:03,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:04,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:04,020 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:04,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash -953991026, now seen corresponding path program 1 times [2024-11-28 03:06:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777206085] [2024-11-28 03:06:04,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:04,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777206085] [2024-11-28 03:06:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777206085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181671103] [2024-11-28 03:06:05,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:05,941 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:05,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-11-28 03:06:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:07,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 5280 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:06:07,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 23644 proven. 0 refuted. 0 times theorem prover too weak. 132596 trivial. 0 not checked. [2024-11-28 03:06:07,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181671103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:06:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567360728] [2024-11-28 03:06:07,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:07,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:07,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:07,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:07,112 INFO L87 Difference]: Start difference. First operand 20034 states and 32048 transitions. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:07,220 INFO L93 Difference]: Finished difference Result 30283 states and 47891 transitions. [2024-11-28 03:06:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:07,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2396 [2024-11-28 03:06:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:07,244 INFO L225 Difference]: With dead ends: 30283 [2024-11-28 03:06:07,244 INFO L226 Difference]: Without dead ends: 20134 [2024-11-28 03:06:07,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2401 GetRequests, 2395 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:07,255 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:07,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20134 states. [2024-11-28 03:06:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20134 to 20134. [2024-11-28 03:06:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20134 states, 19437 states have (on average 1.5850182641354118) internal successors, (30808), 19437 states have internal predecessors, (30808), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20134 states to 20134 states and 32198 transitions. [2024-11-28 03:06:07,593 INFO L78 Accepts]: Start accepts. Automaton has 20134 states and 32198 transitions. Word has length 2396 [2024-11-28 03:06:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:07,595 INFO L471 AbstractCegarLoop]: Abstraction has 20134 states and 32198 transitions. [2024-11-28 03:06:07,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 20134 states and 32198 transitions. [2024-11-28 03:06:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2397 [2024-11-28 03:06:07,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:07,740 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:07,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:07,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-11-28 03:06:07,941 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:07,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:07,942 INFO L85 PathProgramCache]: Analyzing trace with hash -917798886, now seen corresponding path program 1 times [2024-11-28 03:06:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:07,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735764805] [2024-11-28 03:06:07,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:07,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735764805] [2024-11-28 03:06:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735764805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114716722] [2024-11-28 03:06:09,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:09,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:09,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:09,969 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:09,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-11-28 03:06:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:11,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 5280 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:06:11,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 24412 proven. 0 refuted. 0 times theorem prover too weak. 131828 trivial. 0 not checked. [2024-11-28 03:06:11,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:11,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114716722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:11,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:11,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:06:11,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045139835] [2024-11-28 03:06:11,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:11,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:11,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:11,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:11,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:11,174 INFO L87 Difference]: Start difference. First operand 20134 states and 32198 transitions. Second operand has 6 states, 5 states have (on average 201.0) internal successors, (1005), 6 states have internal predecessors, (1005), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:12,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:12,894 INFO L93 Difference]: Finished difference Result 30583 states and 48351 transitions. [2024-11-28 03:06:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:06:12,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 201.0) internal successors, (1005), 6 states have internal predecessors, (1005), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2396 [2024-11-28 03:06:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:12,921 INFO L225 Difference]: With dead ends: 30583 [2024-11-28 03:06:12,921 INFO L226 Difference]: Without dead ends: 20154 [2024-11-28 03:06:12,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2401 GetRequests, 2395 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:12,933 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:12,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:06:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20154 states. [2024-11-28 03:06:13,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20154 to 20154. [2024-11-28 03:06:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20154 states, 19457 states have (on average 1.5844169193606414) internal successors, (30828), 19457 states have internal predecessors, (30828), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20154 states to 20154 states and 32218 transitions. [2024-11-28 03:06:13,271 INFO L78 Accepts]: Start accepts. Automaton has 20154 states and 32218 transitions. Word has length 2396 [2024-11-28 03:06:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:13,272 INFO L471 AbstractCegarLoop]: Abstraction has 20154 states and 32218 transitions. [2024-11-28 03:06:13,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 201.0) internal successors, (1005), 6 states have internal predecessors, (1005), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 20154 states and 32218 transitions. [2024-11-28 03:06:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2398 [2024-11-28 03:06:13,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:13,318 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:13,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-11-28 03:06:13,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-11-28 03:06:13,518 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:13,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash -512807039, now seen corresponding path program 1 times [2024-11-28 03:06:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:13,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023611165] [2024-11-28 03:06:13,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:13,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023611165] [2024-11-28 03:06:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023611165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97599663] [2024-11-28 03:06:15,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:15,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:15,539 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:15,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-11-28 03:06:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:16,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 5283 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:06:16,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 24576 proven. 0 refuted. 0 times theorem prover too weak. 131664 trivial. 0 not checked. [2024-11-28 03:06:16,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97599663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:16,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:16,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:06:16,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278333024] [2024-11-28 03:06:16,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:16,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:16,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:16,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:16,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:16,843 INFO L87 Difference]: Start difference. First operand 20154 states and 32218 transitions. Second operand has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:16,978 INFO L93 Difference]: Finished difference Result 30783 states and 48651 transitions. [2024-11-28 03:06:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:16,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2397 [2024-11-28 03:06:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:17,002 INFO L225 Difference]: With dead ends: 30783 [2024-11-28 03:06:17,002 INFO L226 Difference]: Without dead ends: 20244 [2024-11-28 03:06:17,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2402 GetRequests, 2396 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:17,013 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:17,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20244 states. [2024-11-28 03:06:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20244 to 20244. [2024-11-28 03:06:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20244 states, 19547 states have (on average 1.5837724458996265) internal successors, (30958), 19547 states have internal predecessors, (30958), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20244 states to 20244 states and 32348 transitions. [2024-11-28 03:06:17,352 INFO L78 Accepts]: Start accepts. Automaton has 20244 states and 32348 transitions. Word has length 2397 [2024-11-28 03:06:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:17,354 INFO L471 AbstractCegarLoop]: Abstraction has 20244 states and 32348 transitions. [2024-11-28 03:06:17,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 20244 states and 32348 transitions. [2024-11-28 03:06:17,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2398 [2024-11-28 03:06:17,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:17,400 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:17,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2024-11-28 03:06:17,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-28 03:06:17,601 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:17,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -406945061, now seen corresponding path program 1 times [2024-11-28 03:06:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412042859] [2024-11-28 03:06:17,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:17,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412042859] [2024-11-28 03:06:19,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412042859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153511455] [2024-11-28 03:06:19,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:19,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:19,686 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:19,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-11-28 03:06:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:20,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 5283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:06:20,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 24576 proven. 0 refuted. 0 times theorem prover too weak. 131664 trivial. 0 not checked. [2024-11-28 03:06:20,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153511455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:20,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:06:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193966109] [2024-11-28 03:06:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:20,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:20,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:20,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:20,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:20,935 INFO L87 Difference]: Start difference. First operand 20244 states and 32348 transitions. Second operand has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:21,054 INFO L93 Difference]: Finished difference Result 30753 states and 48581 transitions. [2024-11-28 03:06:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2397 [2024-11-28 03:06:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:21,081 INFO L225 Difference]: With dead ends: 30753 [2024-11-28 03:06:21,082 INFO L226 Difference]: Without dead ends: 20254 [2024-11-28 03:06:21,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2402 GetRequests, 2397 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:21,094 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:21,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20254 states. [2024-11-28 03:06:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20254 to 20254. [2024-11-28 03:06:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20254 states, 19557 states have (on average 1.582962622079051) internal successors, (30958), 19557 states have internal predecessors, (30958), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20254 states to 20254 states and 32348 transitions. [2024-11-28 03:06:21,475 INFO L78 Accepts]: Start accepts. Automaton has 20254 states and 32348 transitions. Word has length 2397 [2024-11-28 03:06:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:21,476 INFO L471 AbstractCegarLoop]: Abstraction has 20254 states and 32348 transitions. [2024-11-28 03:06:21,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 20254 states and 32348 transitions. [2024-11-28 03:06:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2399 [2024-11-28 03:06:21,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:21,528 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:21,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:21,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:21,729 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:21,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1198767380, now seen corresponding path program 1 times [2024-11-28 03:06:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:21,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996952315] [2024-11-28 03:06:21,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:24,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:24,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996952315] [2024-11-28 03:06:24,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996952315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:24,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749503577] [2024-11-28 03:06:24,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:24,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:24,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:24,157 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:24,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-11-28 03:06:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:25,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 5286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:06:25,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 25341 proven. 0 refuted. 0 times theorem prover too weak. 130899 trivial. 0 not checked. [2024-11-28 03:06:25,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749503577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:25,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:25,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:06:25,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126583499] [2024-11-28 03:06:25,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:25,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:25,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:25,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:25,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:25,545 INFO L87 Difference]: Start difference. First operand 20254 states and 32348 transitions. Second operand has 6 states, 5 states have (on average 201.4) internal successors, (1007), 6 states have internal predecessors, (1007), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:27,224 INFO L93 Difference]: Finished difference Result 31173 states and 49231 transitions. [2024-11-28 03:06:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:06:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 201.4) internal successors, (1007), 6 states have internal predecessors, (1007), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2398 [2024-11-28 03:06:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:27,250 INFO L225 Difference]: With dead ends: 31173 [2024-11-28 03:06:27,250 INFO L226 Difference]: Without dead ends: 20274 [2024-11-28 03:06:27,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2403 GetRequests, 2397 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:27,262 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:27,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:06:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20274 states. [2024-11-28 03:06:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20274 to 20274. [2024-11-28 03:06:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20274 states, 19577 states have (on average 1.5823670633907136) internal successors, (30978), 19577 states have internal predecessors, (30978), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20274 states to 20274 states and 32368 transitions. [2024-11-28 03:06:27,606 INFO L78 Accepts]: Start accepts. Automaton has 20274 states and 32368 transitions. Word has length 2398 [2024-11-28 03:06:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:27,608 INFO L471 AbstractCegarLoop]: Abstraction has 20274 states and 32368 transitions. [2024-11-28 03:06:27,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 201.4) internal successors, (1007), 6 states have internal predecessors, (1007), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 20274 states and 32368 transitions. [2024-11-28 03:06:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2400 [2024-11-28 03:06:27,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:27,659 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:27,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-11-28 03:06:27,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:27,860 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:27,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1620921551, now seen corresponding path program 1 times [2024-11-28 03:06:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434801542] [2024-11-28 03:06:27,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:29,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:29,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434801542] [2024-11-28 03:06:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434801542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:29,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824414069] [2024-11-28 03:06:29,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:29,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:29,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:29,878 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:29,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-11-28 03:06:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:31,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 5289 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:06:31,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 25500 proven. 0 refuted. 0 times theorem prover too weak. 130740 trivial. 0 not checked. [2024-11-28 03:06:31,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824414069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:31,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:31,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:06:31,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263698543] [2024-11-28 03:06:31,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:31,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:31,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:31,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:31,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:31,127 INFO L87 Difference]: Start difference. First operand 20274 states and 32368 transitions. Second operand has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:31,262 INFO L93 Difference]: Finished difference Result 31373 states and 49531 transitions. [2024-11-28 03:06:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2399 [2024-11-28 03:06:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:31,288 INFO L225 Difference]: With dead ends: 31373 [2024-11-28 03:06:31,288 INFO L226 Difference]: Without dead ends: 20364 [2024-11-28 03:06:31,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2404 GetRequests, 2398 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:31,300 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:31,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20364 states. [2024-11-28 03:06:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20364 to 20364. [2024-11-28 03:06:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20364 states, 19667 states have (on average 1.5817359027813087) internal successors, (31108), 19667 states have internal predecessors, (31108), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20364 states to 20364 states and 32498 transitions. [2024-11-28 03:06:31,626 INFO L78 Accepts]: Start accepts. Automaton has 20364 states and 32498 transitions. Word has length 2399 [2024-11-28 03:06:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:31,627 INFO L471 AbstractCegarLoop]: Abstraction has 20364 states and 32498 transitions. [2024-11-28 03:06:31,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 20364 states and 32498 transitions. [2024-11-28 03:06:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2400 [2024-11-28 03:06:31,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:31,763 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:31,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:31,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:31,964 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:31,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash -400958057, now seen corresponding path program 1 times [2024-11-28 03:06:31,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:31,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068816349] [2024-11-28 03:06:31,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:31,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:33,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068816349] [2024-11-28 03:06:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068816349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:33,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978369108] [2024-11-28 03:06:33,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:33,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:33,838 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:33,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-11-28 03:06:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:35,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 5289 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:06:35,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 25500 proven. 0 refuted. 0 times theorem prover too weak. 130740 trivial. 0 not checked. [2024-11-28 03:06:35,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:35,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978369108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:35,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:35,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:06:35,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324248813] [2024-11-28 03:06:35,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:35,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:35,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:35,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:35,084 INFO L87 Difference]: Start difference. First operand 20364 states and 32498 transitions. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:35,208 INFO L93 Difference]: Finished difference Result 31343 states and 49461 transitions. [2024-11-28 03:06:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:35,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2399 [2024-11-28 03:06:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:35,233 INFO L225 Difference]: With dead ends: 31343 [2024-11-28 03:06:35,233 INFO L226 Difference]: Without dead ends: 20374 [2024-11-28 03:06:35,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2404 GetRequests, 2399 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:35,246 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:35,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20374 states. [2024-11-28 03:06:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20374 to 20374. [2024-11-28 03:06:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20374 states, 19677 states have (on average 1.5809320526503023) internal successors, (31108), 19677 states have internal predecessors, (31108), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20374 states to 20374 states and 32498 transitions. [2024-11-28 03:06:35,574 INFO L78 Accepts]: Start accepts. Automaton has 20374 states and 32498 transitions. Word has length 2399 [2024-11-28 03:06:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:35,575 INFO L471 AbstractCegarLoop]: Abstraction has 20374 states and 32498 transitions. [2024-11-28 03:06:35,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:35,576 INFO L276 IsEmpty]: Start isEmpty. Operand 20374 states and 32498 transitions. [2024-11-28 03:06:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2401 [2024-11-28 03:06:35,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:35,620 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:35,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-11-28 03:06:35,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:35,821 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:35,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1406006874, now seen corresponding path program 1 times [2024-11-28 03:06:35,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:35,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992313064] [2024-11-28 03:06:35,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:35,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992313064] [2024-11-28 03:06:37,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992313064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298516887] [2024-11-28 03:06:37,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:37,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:37,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:37,903 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:37,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-11-28 03:06:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:39,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 5292 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:06:39,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 26262 proven. 0 refuted. 0 times theorem prover too weak. 129978 trivial. 0 not checked. [2024-11-28 03:06:39,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:39,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298516887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:39,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:39,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:06:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515344816] [2024-11-28 03:06:39,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:39,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:39,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:39,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:39,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:39,161 INFO L87 Difference]: Start difference. First operand 20374 states and 32498 transitions. Second operand has 6 states, 5 states have (on average 201.8) internal successors, (1009), 6 states have internal predecessors, (1009), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:40,813 INFO L93 Difference]: Finished difference Result 31763 states and 50111 transitions. [2024-11-28 03:06:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:06:40,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 201.8) internal successors, (1009), 6 states have internal predecessors, (1009), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2400 [2024-11-28 03:06:40,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:40,834 INFO L225 Difference]: With dead ends: 31763 [2024-11-28 03:06:40,834 INFO L226 Difference]: Without dead ends: 20394 [2024-11-28 03:06:40,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2405 GetRequests, 2399 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:40,844 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:40,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:06:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20394 states. [2024-11-28 03:06:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20394 to 20394. [2024-11-28 03:06:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20394 states, 19697 states have (on average 1.5803421840889476) internal successors, (31128), 19697 states have internal predecessors, (31128), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20394 states to 20394 states and 32518 transitions. [2024-11-28 03:06:41,111 INFO L78 Accepts]: Start accepts. Automaton has 20394 states and 32518 transitions. Word has length 2400 [2024-11-28 03:06:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:41,113 INFO L471 AbstractCegarLoop]: Abstraction has 20394 states and 32518 transitions. [2024-11-28 03:06:41,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 201.8) internal successors, (1009), 6 states have internal predecessors, (1009), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 20394 states and 32518 transitions. [2024-11-28 03:06:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2402 [2024-11-28 03:06:41,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:41,155 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:41,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-11-28 03:06:41,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:41,356 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:41,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:41,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1356532283, now seen corresponding path program 1 times [2024-11-28 03:06:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095218934] [2024-11-28 03:06:41,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:41,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:43,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:43,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095218934] [2024-11-28 03:06:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095218934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:43,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082346977] [2024-11-28 03:06:43,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:43,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:43,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:43,569 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:43,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-11-28 03:06:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:44,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 5295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:06:44,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 26416 proven. 0 refuted. 0 times theorem prover too weak. 129824 trivial. 0 not checked. [2024-11-28 03:06:44,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082346977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:44,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:06:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227982612] [2024-11-28 03:06:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:44,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:44,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:44,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:44,857 INFO L87 Difference]: Start difference. First operand 20394 states and 32518 transitions. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:45,001 INFO L93 Difference]: Finished difference Result 31963 states and 50411 transitions. [2024-11-28 03:06:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:45,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2401 [2024-11-28 03:06:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:45,027 INFO L225 Difference]: With dead ends: 31963 [2024-11-28 03:06:45,028 INFO L226 Difference]: Without dead ends: 20484 [2024-11-28 03:06:45,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2406 GetRequests, 2400 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:45,040 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:45,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20484 states. [2024-11-28 03:06:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20484 to 20484. [2024-11-28 03:06:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20484 states, 19787 states have (on average 1.5797240612523373) internal successors, (31258), 19787 states have internal predecessors, (31258), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20484 states to 20484 states and 32648 transitions. [2024-11-28 03:06:45,387 INFO L78 Accepts]: Start accepts. Automaton has 20484 states and 32648 transitions. Word has length 2401 [2024-11-28 03:06:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:45,388 INFO L471 AbstractCegarLoop]: Abstraction has 20484 states and 32648 transitions. [2024-11-28 03:06:45,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 20484 states and 32648 transitions. [2024-11-28 03:06:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2402 [2024-11-28 03:06:45,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:45,434 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:45,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:45,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:45,635 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:45,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2092234143, now seen corresponding path program 1 times [2024-11-28 03:06:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064227385] [2024-11-28 03:06:45,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:45,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:47,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:47,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064227385] [2024-11-28 03:06:47,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064227385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:47,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53923312] [2024-11-28 03:06:47,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:47,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:47,849 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:47,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-11-28 03:06:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:48,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 5295 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:06:48,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 26416 proven. 0 refuted. 0 times theorem prover too weak. 129824 trivial. 0 not checked. [2024-11-28 03:06:48,995 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:48,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53923312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:48,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:48,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:06:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111427072] [2024-11-28 03:06:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:48,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:48,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:48,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:49,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:49,000 INFO L87 Difference]: Start difference. First operand 20484 states and 32648 transitions. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:49,123 INFO L93 Difference]: Finished difference Result 31933 states and 50341 transitions. [2024-11-28 03:06:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:49,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2401 [2024-11-28 03:06:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:49,149 INFO L225 Difference]: With dead ends: 31933 [2024-11-28 03:06:49,149 INFO L226 Difference]: Without dead ends: 20494 [2024-11-28 03:06:49,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2406 GetRequests, 2401 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:49,161 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:49,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20494 states. [2024-11-28 03:06:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20494 to 20494. [2024-11-28 03:06:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20494 states, 19797 states have (on average 1.5789260999141284) internal successors, (31258), 19797 states have internal predecessors, (31258), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20494 states to 20494 states and 32648 transitions. [2024-11-28 03:06:49,487 INFO L78 Accepts]: Start accepts. Automaton has 20494 states and 32648 transitions. Word has length 2401 [2024-11-28 03:06:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:49,488 INFO L471 AbstractCegarLoop]: Abstraction has 20494 states and 32648 transitions. [2024-11-28 03:06:49,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 20494 states and 32648 transitions. [2024-11-28 03:06:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2403 [2024-11-28 03:06:49,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:49,532 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:49,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-11-28 03:06:49,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2024-11-28 03:06:49,733 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:49,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 440225876, now seen corresponding path program 1 times [2024-11-28 03:06:49,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:49,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752825733] [2024-11-28 03:06:49,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:51,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:51,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752825733] [2024-11-28 03:06:51,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752825733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:51,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951844545] [2024-11-28 03:06:51,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:51,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:51,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:51,754 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:51,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-11-28 03:06:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:52,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 5298 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:06:52,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 27175 proven. 0 refuted. 0 times theorem prover too weak. 129065 trivial. 0 not checked. [2024-11-28 03:06:52,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951844545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:06:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853296760] [2024-11-28 03:06:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:52,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:52,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:52,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:52,979 INFO L87 Difference]: Start difference. First operand 20494 states and 32648 transitions. Second operand has 6 states, 5 states have (on average 202.2) internal successors, (1011), 6 states have internal predecessors, (1011), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:54,574 INFO L93 Difference]: Finished difference Result 32353 states and 50991 transitions. [2024-11-28 03:06:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:06:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 202.2) internal successors, (1011), 6 states have internal predecessors, (1011), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2402 [2024-11-28 03:06:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:54,597 INFO L225 Difference]: With dead ends: 32353 [2024-11-28 03:06:54,597 INFO L226 Difference]: Without dead ends: 20514 [2024-11-28 03:06:54,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2407 GetRequests, 2401 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:54,608 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:54,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:06:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20514 states. [2024-11-28 03:06:54,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20514 to 20514. [2024-11-28 03:06:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20514 states, 19817 states have (on average 1.5783418277236716) internal successors, (31278), 19817 states have internal predecessors, (31278), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20514 states to 20514 states and 32668 transitions. [2024-11-28 03:06:54,898 INFO L78 Accepts]: Start accepts. Automaton has 20514 states and 32668 transitions. Word has length 2402 [2024-11-28 03:06:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:54,899 INFO L471 AbstractCegarLoop]: Abstraction has 20514 states and 32668 transitions. [2024-11-28 03:06:54,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 202.2) internal successors, (1011), 6 states have internal predecessors, (1011), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:06:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 20514 states and 32668 transitions. [2024-11-28 03:06:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2404 [2024-11-28 03:06:54,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:54,939 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:54,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-11-28 03:06:55,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-11-28 03:06:55,140 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:55,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1297585069, now seen corresponding path program 1 times [2024-11-28 03:06:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:55,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132457688] [2024-11-28 03:06:55,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:06:56,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:56,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132457688] [2024-11-28 03:06:56,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132457688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:56,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31597634] [2024-11-28 03:06:56,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:56,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:56,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:56,939 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:56,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-11-28 03:06:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:57,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 5301 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:06:57,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 27324 proven. 0 refuted. 0 times theorem prover too weak. 128916 trivial. 0 not checked. [2024-11-28 03:06:58,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:58,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31597634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:58,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:06:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222636455] [2024-11-28 03:06:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:58,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:58,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:58,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:58,033 INFO L87 Difference]: Start difference. First operand 20514 states and 32668 transitions. Second operand has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:58,133 INFO L93 Difference]: Finished difference Result 32393 states and 51041 transitions. [2024-11-28 03:06:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2403 [2024-11-28 03:06:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:58,156 INFO L225 Difference]: With dead ends: 32393 [2024-11-28 03:06:58,156 INFO L226 Difference]: Without dead ends: 20524 [2024-11-28 03:06:58,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2408 GetRequests, 2403 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:58,168 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:58,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20524 states. [2024-11-28 03:06:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20524 to 20524. [2024-11-28 03:06:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20524 states, 19827 states have (on average 1.5780501336561255) internal successors, (31288), 19827 states have internal predecessors, (31288), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:06:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20524 states to 20524 states and 32678 transitions. [2024-11-28 03:06:58,477 INFO L78 Accepts]: Start accepts. Automaton has 20524 states and 32678 transitions. Word has length 2403 [2024-11-28 03:06:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:58,478 INFO L471 AbstractCegarLoop]: Abstraction has 20524 states and 32678 transitions. [2024-11-28 03:06:58,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:06:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20524 states and 32678 transitions. [2024-11-28 03:06:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2404 [2024-11-28 03:06:58,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:58,524 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:58,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-11-28 03:06:58,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:58,725 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:58,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1816018541, now seen corresponding path program 1 times [2024-11-28 03:06:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275785919] [2024-11-28 03:06:58,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275785919] [2024-11-28 03:07:00,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275785919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217308070] [2024-11-28 03:07:00,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:00,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:00,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:00,606 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:00,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-11-28 03:07:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:01,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 5301 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:07:01,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 27324 proven. 0 refuted. 0 times theorem prover too weak. 128916 trivial. 0 not checked. [2024-11-28 03:07:01,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217308070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:01,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:01,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:07:01,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097807930] [2024-11-28 03:07:01,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:01,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:07:01,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:01,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:07:01,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:01,715 INFO L87 Difference]: Start difference. First operand 20524 states and 32678 transitions. Second operand has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:01,851 INFO L93 Difference]: Finished difference Result 32583 states and 51321 transitions. [2024-11-28 03:07:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:07:01,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2403 [2024-11-28 03:07:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:01,877 INFO L225 Difference]: With dead ends: 32583 [2024-11-28 03:07:01,877 INFO L226 Difference]: Without dead ends: 20614 [2024-11-28 03:07:01,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2408 GetRequests, 2402 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:01,889 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:01,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20614 states. [2024-11-28 03:07:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20614 to 20614. [2024-11-28 03:07:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20614 states, 19917 states have (on average 1.5769443189235326) internal successors, (31408), 19917 states have internal predecessors, (31408), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20614 states to 20614 states and 32798 transitions. [2024-11-28 03:07:02,221 INFO L78 Accepts]: Start accepts. Automaton has 20614 states and 32798 transitions. Word has length 2403 [2024-11-28 03:07:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:02,223 INFO L471 AbstractCegarLoop]: Abstraction has 20614 states and 32798 transitions. [2024-11-28 03:07:02,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 20614 states and 32798 transitions. [2024-11-28 03:07:02,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2405 [2024-11-28 03:07:02,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:02,267 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:02,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-11-28 03:07:02,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-11-28 03:07:02,468 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:02,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2083986586, now seen corresponding path program 1 times [2024-11-28 03:07:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:02,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146118696] [2024-11-28 03:07:02,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146118696] [2024-11-28 03:07:04,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146118696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:04,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417212280] [2024-11-28 03:07:04,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:04,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:04,570 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:04,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-11-28 03:07:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:05,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:07:05,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 28080 proven. 0 refuted. 0 times theorem prover too weak. 128160 trivial. 0 not checked. [2024-11-28 03:07:05,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:05,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417212280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:05,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:05,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:07:05,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350776370] [2024-11-28 03:07:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:05,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:07:05,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:05,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:07:05,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:05,707 INFO L87 Difference]: Start difference. First operand 20614 states and 32798 transitions. Second operand has 6 states, 5 states have (on average 202.6) internal successors, (1013), 6 states have internal predecessors, (1013), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:07,144 INFO L93 Difference]: Finished difference Result 32943 states and 51871 transitions. [2024-11-28 03:07:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:07:07,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 202.6) internal successors, (1013), 6 states have internal predecessors, (1013), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2404 [2024-11-28 03:07:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:07,169 INFO L225 Difference]: With dead ends: 32943 [2024-11-28 03:07:07,169 INFO L226 Difference]: Without dead ends: 20634 [2024-11-28 03:07:07,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2409 GetRequests, 2403 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:07,181 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:07,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:07:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20634 states. [2024-11-28 03:07:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20634 to 20634. [2024-11-28 03:07:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20634 states, 19937 states have (on average 1.5763655514871846) internal successors, (31428), 19937 states have internal predecessors, (31428), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20634 states to 20634 states and 32818 transitions. [2024-11-28 03:07:07,574 INFO L78 Accepts]: Start accepts. Automaton has 20634 states and 32818 transitions. Word has length 2404 [2024-11-28 03:07:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:07,575 INFO L471 AbstractCegarLoop]: Abstraction has 20634 states and 32818 transitions. [2024-11-28 03:07:07,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 202.6) internal successors, (1013), 6 states have internal predecessors, (1013), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 20634 states and 32818 transitions. [2024-11-28 03:07:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2406 [2024-11-28 03:07:07,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:07,614 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:07,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-11-28 03:07:07,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:07,814 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:07,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 274818569, now seen corresponding path program 1 times [2024-11-28 03:07:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:07,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477857050] [2024-11-28 03:07:07,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477857050] [2024-11-28 03:07:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477857050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980092817] [2024-11-28 03:07:09,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:09,854 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:09,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-11-28 03:07:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:10,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 5307 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:07:10,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 28224 proven. 0 refuted. 0 times theorem prover too weak. 128016 trivial. 0 not checked. [2024-11-28 03:07:11,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:11,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980092817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:11,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:11,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:07:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243340406] [2024-11-28 03:07:11,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:11,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:07:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:11,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:07:11,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:11,085 INFO L87 Difference]: Start difference. First operand 20634 states and 32818 transitions. Second operand has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:11,325 INFO L93 Difference]: Finished difference Result 33143 states and 52171 transitions. [2024-11-28 03:07:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:07:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2405 [2024-11-28 03:07:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:11,345 INFO L225 Difference]: With dead ends: 33143 [2024-11-28 03:07:11,345 INFO L226 Difference]: Without dead ends: 20724 [2024-11-28 03:07:11,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2410 GetRequests, 2404 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:11,353 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:11,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20724 states. [2024-11-28 03:07:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20724 to 20724. [2024-11-28 03:07:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20724 states, 20027 states have (on average 1.5757727068457583) internal successors, (31558), 20027 states have internal predecessors, (31558), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20724 states to 20724 states and 32948 transitions. [2024-11-28 03:07:11,615 INFO L78 Accepts]: Start accepts. Automaton has 20724 states and 32948 transitions. Word has length 2405 [2024-11-28 03:07:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:11,616 INFO L471 AbstractCegarLoop]: Abstraction has 20724 states and 32948 transitions. [2024-11-28 03:07:11,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20724 states and 32948 transitions. [2024-11-28 03:07:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2406 [2024-11-28 03:07:11,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:11,654 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:11,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-11-28 03:07:11,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:11,854 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:11,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1540141667, now seen corresponding path program 1 times [2024-11-28 03:07:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972831550] [2024-11-28 03:07:11,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972831550] [2024-11-28 03:07:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972831550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260143989] [2024-11-28 03:07:13,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:13,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:13,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:13,782 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:13,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-11-28 03:07:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:14,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 5307 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:07:14,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 28224 proven. 0 refuted. 0 times theorem prover too weak. 128016 trivial. 0 not checked. [2024-11-28 03:07:14,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:14,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260143989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:14,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:14,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:07:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703293156] [2024-11-28 03:07:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:14,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:07:14,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:14,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:07:14,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:14,842 INFO L87 Difference]: Start difference. First operand 20724 states and 32948 transitions. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:14,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:14,942 INFO L93 Difference]: Finished difference Result 33113 states and 52101 transitions. [2024-11-28 03:07:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:07:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2405 [2024-11-28 03:07:14,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:14,963 INFO L225 Difference]: With dead ends: 33113 [2024-11-28 03:07:14,963 INFO L226 Difference]: Without dead ends: 20734 [2024-11-28 03:07:14,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2410 GetRequests, 2405 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:14,973 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:14,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20734 states. [2024-11-28 03:07:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20734 to 20734. [2024-11-28 03:07:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20734 states, 20037 states have (on average 1.5749862753905275) internal successors, (31558), 20037 states have internal predecessors, (31558), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20734 states to 20734 states and 32948 transitions. [2024-11-28 03:07:15,240 INFO L78 Accepts]: Start accepts. Automaton has 20734 states and 32948 transitions. Word has length 2405 [2024-11-28 03:07:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:15,241 INFO L471 AbstractCegarLoop]: Abstraction has 20734 states and 32948 transitions. [2024-11-28 03:07:15,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20734 states and 32948 transitions. [2024-11-28 03:07:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2407 [2024-11-28 03:07:15,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:15,276 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:15,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-11-28 03:07:15,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-11-28 03:07:15,477 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:15,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1934396524, now seen corresponding path program 1 times [2024-11-28 03:07:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:15,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256051430] [2024-11-28 03:07:15,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256051430] [2024-11-28 03:07:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256051430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470557792] [2024-11-28 03:07:17,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:17,294 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:17,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-11-28 03:07:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:18,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 5310 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:07:18,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 28977 proven. 0 refuted. 0 times theorem prover too weak. 127263 trivial. 0 not checked. [2024-11-28 03:07:18,372 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:18,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470557792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:18,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:18,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:07:18,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022836117] [2024-11-28 03:07:18,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:18,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:07:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:18,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:07:18,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:18,374 INFO L87 Difference]: Start difference. First operand 20734 states and 32948 transitions. Second operand has 6 states, 5 states have (on average 203.0) internal successors, (1015), 6 states have internal predecessors, (1015), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:19,821 INFO L93 Difference]: Finished difference Result 33533 states and 52751 transitions. [2024-11-28 03:07:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:07:19,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 203.0) internal successors, (1015), 6 states have internal predecessors, (1015), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2406 [2024-11-28 03:07:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:19,842 INFO L225 Difference]: With dead ends: 33533 [2024-11-28 03:07:19,842 INFO L226 Difference]: Without dead ends: 20754 [2024-11-28 03:07:19,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2411 GetRequests, 2405 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:19,852 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:19,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:07:19,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20754 states. [2024-11-28 03:07:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20754 to 20754. [2024-11-28 03:07:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20754 states, 20057 states have (on average 1.5744129231689685) internal successors, (31578), 20057 states have internal predecessors, (31578), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20754 states to 20754 states and 32968 transitions. [2024-11-28 03:07:20,116 INFO L78 Accepts]: Start accepts. Automaton has 20754 states and 32968 transitions. Word has length 2406 [2024-11-28 03:07:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:20,117 INFO L471 AbstractCegarLoop]: Abstraction has 20754 states and 32968 transitions. [2024-11-28 03:07:20,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 203.0) internal successors, (1015), 6 states have internal predecessors, (1015), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 20754 states and 32968 transitions. [2024-11-28 03:07:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2408 [2024-11-28 03:07:20,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:20,153 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:20,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-11-28 03:07:20,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-28 03:07:20,353 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:20,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash 373325737, now seen corresponding path program 1 times [2024-11-28 03:07:20,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:20,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062283486] [2024-11-28 03:07:20,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:20,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:22,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:22,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062283486] [2024-11-28 03:07:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062283486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:22,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708761818] [2024-11-28 03:07:22,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:22,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:22,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:22,183 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:22,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-11-28 03:07:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:23,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 5313 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:07:23,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 29116 proven. 0 refuted. 0 times theorem prover too weak. 127124 trivial. 0 not checked. [2024-11-28 03:07:23,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708761818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:23,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:23,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:07:23,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186248006] [2024-11-28 03:07:23,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:23,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:07:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:23,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:07:23,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:23,417 INFO L87 Difference]: Start difference. First operand 20754 states and 32968 transitions. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:23,537 INFO L93 Difference]: Finished difference Result 33733 states and 53051 transitions. [2024-11-28 03:07:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:07:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2407 [2024-11-28 03:07:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:23,561 INFO L225 Difference]: With dead ends: 33733 [2024-11-28 03:07:23,561 INFO L226 Difference]: Without dead ends: 20844 [2024-11-28 03:07:23,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2412 GetRequests, 2406 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:23,572 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:23,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20844 states. [2024-11-28 03:07:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20844 to 20844. [2024-11-28 03:07:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20844 states, 20147 states have (on average 1.5738323323571748) internal successors, (31708), 20147 states have internal predecessors, (31708), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20844 states to 20844 states and 33098 transitions. [2024-11-28 03:07:23,868 INFO L78 Accepts]: Start accepts. Automaton has 20844 states and 33098 transitions. Word has length 2407 [2024-11-28 03:07:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:23,869 INFO L471 AbstractCegarLoop]: Abstraction has 20844 states and 33098 transitions. [2024-11-28 03:07:23,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 20844 states and 33098 transitions. [2024-11-28 03:07:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2408 [2024-11-28 03:07:23,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:23,912 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:23,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2024-11-28 03:07:24,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:24,112 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:24,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -8449777, now seen corresponding path program 1 times [2024-11-28 03:07:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:24,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68515592] [2024-11-28 03:07:24,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:24,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68515592] [2024-11-28 03:07:26,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68515592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803909743] [2024-11-28 03:07:26,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:26,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:26,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:26,056 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:26,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-11-28 03:07:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:27,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 5313 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:07:27,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 29116 proven. 0 refuted. 0 times theorem prover too weak. 127124 trivial. 0 not checked. [2024-11-28 03:07:27,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803909743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:27,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:07:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261499738] [2024-11-28 03:07:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:27,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:07:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:27,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:07:27,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:27,144 INFO L87 Difference]: Start difference. First operand 20844 states and 33098 transitions. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:27,244 INFO L93 Difference]: Finished difference Result 33703 states and 52981 transitions. [2024-11-28 03:07:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:07:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2407 [2024-11-28 03:07:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:27,266 INFO L225 Difference]: With dead ends: 33703 [2024-11-28 03:07:27,266 INFO L226 Difference]: Without dead ends: 20854 [2024-11-28 03:07:27,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2412 GetRequests, 2407 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:27,277 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:27,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20854 states. [2024-11-28 03:07:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20854 to 20854. [2024-11-28 03:07:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20854 states, 20157 states have (on average 1.5730515453688545) internal successors, (31708), 20157 states have internal predecessors, (31708), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20854 states to 20854 states and 33098 transitions. [2024-11-28 03:07:27,558 INFO L78 Accepts]: Start accepts. Automaton has 20854 states and 33098 transitions. Word has length 2407 [2024-11-28 03:07:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:27,559 INFO L471 AbstractCegarLoop]: Abstraction has 20854 states and 33098 transitions. [2024-11-28 03:07:27,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 20854 states and 33098 transitions. [2024-11-28 03:07:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2409 [2024-11-28 03:07:27,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:27,598 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:27,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-11-28 03:07:27,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:27,798 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:27,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1811022668, now seen corresponding path program 1 times [2024-11-28 03:07:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:27,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624407823] [2024-11-28 03:07:27,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624407823] [2024-11-28 03:07:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624407823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191972404] [2024-11-28 03:07:29,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:29,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:29,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:29,592 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:29,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-11-28 03:07:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:30,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 5316 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:07:30,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:30,764 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 29116 proven. 0 refuted. 0 times theorem prover too weak. 127124 trivial. 0 not checked. [2024-11-28 03:07:30,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:30,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191972404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:30,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:30,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:07:30,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016643056] [2024-11-28 03:07:30,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:30,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:07:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:30,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:07:30,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:30,767 INFO L87 Difference]: Start difference. First operand 20854 states and 33098 transitions. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:30,878 INFO L93 Difference]: Finished difference Result 33793 states and 53111 transitions. [2024-11-28 03:07:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:07:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2408 [2024-11-28 03:07:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:30,903 INFO L225 Difference]: With dead ends: 33793 [2024-11-28 03:07:30,903 INFO L226 Difference]: Without dead ends: 20864 [2024-11-28 03:07:30,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2413 GetRequests, 2408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:30,916 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:30,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20864 states. [2024-11-28 03:07:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20864 to 20864. [2024-11-28 03:07:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20864 states, 20167 states have (on average 1.5727673922745078) internal successors, (31718), 20167 states have internal predecessors, (31718), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20864 states to 20864 states and 33108 transitions. [2024-11-28 03:07:31,252 INFO L78 Accepts]: Start accepts. Automaton has 20864 states and 33108 transitions. Word has length 2408 [2024-11-28 03:07:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:31,254 INFO L471 AbstractCegarLoop]: Abstraction has 20864 states and 33108 transitions. [2024-11-28 03:07:31,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 20864 states and 33108 transitions. [2024-11-28 03:07:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2409 [2024-11-28 03:07:31,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:31,298 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:31,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2024-11-28 03:07:31,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-11-28 03:07:31,498 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:31,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2047275738, now seen corresponding path program 1 times [2024-11-28 03:07:31,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:31,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189118115] [2024-11-28 03:07:31,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:31,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:33,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189118115] [2024-11-28 03:07:33,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189118115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:33,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851958362] [2024-11-28 03:07:33,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:33,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:33,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:33,429 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:33,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-11-28 03:07:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:34,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 5316 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:07:34,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 29866 proven. 0 refuted. 0 times theorem prover too weak. 126374 trivial. 0 not checked. [2024-11-28 03:07:34,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:34,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851958362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:34,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:34,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:07:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395270758] [2024-11-28 03:07:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:34,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:07:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:34,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:07:34,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:34,587 INFO L87 Difference]: Start difference. First operand 20864 states and 33108 transitions. Second operand has 6 states, 5 states have (on average 203.4) internal successors, (1017), 6 states have internal predecessors, (1017), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:36,340 INFO L93 Difference]: Finished difference Result 34143 states and 53651 transitions. [2024-11-28 03:07:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:07:36,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 203.4) internal successors, (1017), 6 states have internal predecessors, (1017), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2408 [2024-11-28 03:07:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:36,370 INFO L225 Difference]: With dead ends: 34143 [2024-11-28 03:07:36,370 INFO L226 Difference]: Without dead ends: 20884 [2024-11-28 03:07:36,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2413 GetRequests, 2407 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:36,384 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:36,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:07:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20884 states. [2024-11-28 03:07:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20884 to 20884. [2024-11-28 03:07:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20884 states, 20187 states have (on average 1.572199930648437) internal successors, (31738), 20187 states have internal predecessors, (31738), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20884 states to 20884 states and 33128 transitions. [2024-11-28 03:07:36,754 INFO L78 Accepts]: Start accepts. Automaton has 20884 states and 33128 transitions. Word has length 2408 [2024-11-28 03:07:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:36,755 INFO L471 AbstractCegarLoop]: Abstraction has 20884 states and 33128 transitions. [2024-11-28 03:07:36,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 203.4) internal successors, (1017), 6 states have internal predecessors, (1017), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 20884 states and 33128 transitions. [2024-11-28 03:07:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2410 [2024-11-28 03:07:36,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:36,803 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:36,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2024-11-28 03:07:37,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2024-11-28 03:07:37,004 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:37,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash 910377037, now seen corresponding path program 1 times [2024-11-28 03:07:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:37,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647888277] [2024-11-28 03:07:37,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647888277] [2024-11-28 03:07:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647888277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15960620] [2024-11-28 03:07:39,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:39,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:39,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:39,304 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:39,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-11-28 03:07:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:40,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 5319 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:07:40,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 30000 proven. 0 refuted. 0 times theorem prover too weak. 126240 trivial. 0 not checked. [2024-11-28 03:07:40,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15960620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:40,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:07:40,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194565263] [2024-11-28 03:07:40,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:40,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:07:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:40,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:07:40,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:40,651 INFO L87 Difference]: Start difference. First operand 20884 states and 33128 transitions. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:40,802 INFO L93 Difference]: Finished difference Result 34343 states and 53951 transitions. [2024-11-28 03:07:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:07:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2409 [2024-11-28 03:07:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:40,830 INFO L225 Difference]: With dead ends: 34343 [2024-11-28 03:07:40,830 INFO L226 Difference]: Without dead ends: 20974 [2024-11-28 03:07:40,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2414 GetRequests, 2408 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:40,843 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:40,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20974 states. [2024-11-28 03:07:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20974 to 20974. [2024-11-28 03:07:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20974 states, 20277 states have (on average 1.5716328845489964) internal successors, (31868), 20277 states have internal predecessors, (31868), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20974 states to 20974 states and 33258 transitions. [2024-11-28 03:07:41,194 INFO L78 Accepts]: Start accepts. Automaton has 20974 states and 33258 transitions. Word has length 2409 [2024-11-28 03:07:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:41,195 INFO L471 AbstractCegarLoop]: Abstraction has 20974 states and 33258 transitions. [2024-11-28 03:07:41,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 20974 states and 33258 transitions. [2024-11-28 03:07:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2410 [2024-11-28 03:07:41,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:41,242 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:41,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2024-11-28 03:07:41,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:41,443 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:41,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1926465241, now seen corresponding path program 1 times [2024-11-28 03:07:41,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:41,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194776784] [2024-11-28 03:07:41,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:41,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194776784] [2024-11-28 03:07:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194776784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778063288] [2024-11-28 03:07:43,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:43,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:43,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:43,612 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:43,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-11-28 03:07:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:44,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 5319 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:07:44,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 30000 proven. 0 refuted. 0 times theorem prover too weak. 126240 trivial. 0 not checked. [2024-11-28 03:07:44,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:44,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778063288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:44,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:44,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:07:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006529416] [2024-11-28 03:07:44,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:44,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:07:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:44,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:07:44,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:44,822 INFO L87 Difference]: Start difference. First operand 20974 states and 33258 transitions. Second operand has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:44,948 INFO L93 Difference]: Finished difference Result 34313 states and 53881 transitions. [2024-11-28 03:07:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:07:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2409 [2024-11-28 03:07:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:44,974 INFO L225 Difference]: With dead ends: 34313 [2024-11-28 03:07:44,974 INFO L226 Difference]: Without dead ends: 20984 [2024-11-28 03:07:44,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2414 GetRequests, 2409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:44,986 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:44,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20984 states. [2024-11-28 03:07:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20984 to 20984. [2024-11-28 03:07:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20984 states, 20287 states have (on average 1.57085818504461) internal successors, (31868), 20287 states have internal predecessors, (31868), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20984 states to 20984 states and 33258 transitions. [2024-11-28 03:07:45,316 INFO L78 Accepts]: Start accepts. Automaton has 20984 states and 33258 transitions. Word has length 2409 [2024-11-28 03:07:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:45,317 INFO L471 AbstractCegarLoop]: Abstraction has 20984 states and 33258 transitions. [2024-11-28 03:07:45,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 20984 states and 33258 transitions. [2024-11-28 03:07:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2411 [2024-11-28 03:07:45,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:45,364 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:45,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-11-28 03:07:45,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:45,565 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:45,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:45,566 INFO L85 PathProgramCache]: Analyzing trace with hash 540419796, now seen corresponding path program 1 times [2024-11-28 03:07:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:45,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662033918] [2024-11-28 03:07:45,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:47,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662033918] [2024-11-28 03:07:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662033918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631591589] [2024-11-28 03:07:47,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:47,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:47,646 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:47,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-11-28 03:07:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:48,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 5322 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:07:48,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 30747 proven. 0 refuted. 0 times theorem prover too weak. 125493 trivial. 0 not checked. [2024-11-28 03:07:48,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631591589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:07:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653275243] [2024-11-28 03:07:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:48,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:07:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:48,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:07:48,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:48,830 INFO L87 Difference]: Start difference. First operand 20984 states and 33258 transitions. Second operand has 6 states, 5 states have (on average 203.8) internal successors, (1019), 6 states have internal predecessors, (1019), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:50,525 INFO L93 Difference]: Finished difference Result 34733 states and 54531 transitions. [2024-11-28 03:07:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:07:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 203.8) internal successors, (1019), 6 states have internal predecessors, (1019), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2410 [2024-11-28 03:07:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:50,555 INFO L225 Difference]: With dead ends: 34733 [2024-11-28 03:07:50,555 INFO L226 Difference]: Without dead ends: 21004 [2024-11-28 03:07:50,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2415 GetRequests, 2409 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:50,569 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:50,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:07:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21004 states. [2024-11-28 03:07:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21004 to 21004. [2024-11-28 03:07:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21004 states, 20307 states have (on average 1.5702959570591422) internal successors, (31888), 20307 states have internal predecessors, (31888), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21004 states to 21004 states and 33278 transitions. [2024-11-28 03:07:50,941 INFO L78 Accepts]: Start accepts. Automaton has 21004 states and 33278 transitions. Word has length 2410 [2024-11-28 03:07:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:50,942 INFO L471 AbstractCegarLoop]: Abstraction has 21004 states and 33278 transitions. [2024-11-28 03:07:50,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 203.8) internal successors, (1019), 6 states have internal predecessors, (1019), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:07:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 21004 states and 33278 transitions. [2024-11-28 03:07:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2412 [2024-11-28 03:07:50,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:50,990 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:51,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2024-11-28 03:07:51,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2024-11-28 03:07:51,190 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:51,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1538607387, now seen corresponding path program 1 times [2024-11-28 03:07:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:51,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348131657] [2024-11-28 03:07:51,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:51,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:53,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348131657] [2024-11-28 03:07:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348131657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587269545] [2024-11-28 03:07:53,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:53,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:53,328 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:53,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-11-28 03:07:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:54,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 5325 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:07:54,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 30876 proven. 0 refuted. 0 times theorem prover too weak. 125364 trivial. 0 not checked. [2024-11-28 03:07:54,677 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587269545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:54,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:54,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:07:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727305590] [2024-11-28 03:07:54,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:54,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:07:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:54,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:07:54,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:54,681 INFO L87 Difference]: Start difference. First operand 21004 states and 33278 transitions. Second operand has 4 states, 4 states have (on average 254.25) internal successors, (1017), 4 states have internal predecessors, (1017), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:54,831 INFO L93 Difference]: Finished difference Result 34933 states and 54831 transitions. [2024-11-28 03:07:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:07:54,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.25) internal successors, (1017), 4 states have internal predecessors, (1017), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2411 [2024-11-28 03:07:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:54,861 INFO L225 Difference]: With dead ends: 34933 [2024-11-28 03:07:54,861 INFO L226 Difference]: Without dead ends: 21094 [2024-11-28 03:07:54,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2416 GetRequests, 2410 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:07:54,875 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:54,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21094 states. [2024-11-28 03:07:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21094 to 21094. [2024-11-28 03:07:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21094 states, 20397 states have (on average 1.5697406481345295) internal successors, (32018), 20397 states have internal predecessors, (32018), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:07:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21094 states to 21094 states and 33408 transitions. [2024-11-28 03:07:55,377 INFO L78 Accepts]: Start accepts. Automaton has 21094 states and 33408 transitions. Word has length 2411 [2024-11-28 03:07:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:55,378 INFO L471 AbstractCegarLoop]: Abstraction has 21094 states and 33408 transitions. [2024-11-28 03:07:55,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.25) internal successors, (1017), 4 states have internal predecessors, (1017), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 21094 states and 33408 transitions. [2024-11-28 03:07:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2412 [2024-11-28 03:07:55,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:55,425 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:55,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2024-11-28 03:07:55,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-11-28 03:07:55,626 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:55,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1366756299, now seen corresponding path program 1 times [2024-11-28 03:07:55,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:55,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527180129] [2024-11-28 03:07:55,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:07:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527180129] [2024-11-28 03:07:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527180129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694789405] [2024-11-28 03:07:58,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:58,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:58,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:58,010 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:58,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-11-28 03:07:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:59,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 5325 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:07:59,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 30876 proven. 0 refuted. 0 times theorem prover too weak. 125364 trivial. 0 not checked. [2024-11-28 03:07:59,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694789405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:59,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:07:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778911825] [2024-11-28 03:07:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:59,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:07:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:59,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:07:59,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:59,357 INFO L87 Difference]: Start difference. First operand 21094 states and 33408 transitions. Second operand has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:07:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:59,488 INFO L93 Difference]: Finished difference Result 34903 states and 54761 transitions. [2024-11-28 03:07:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:07:59,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2411 [2024-11-28 03:07:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:59,517 INFO L225 Difference]: With dead ends: 34903 [2024-11-28 03:07:59,518 INFO L226 Difference]: Without dead ends: 21104 [2024-11-28 03:07:59,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2416 GetRequests, 2411 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:07:59,532 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:59,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21104 states. [2024-11-28 03:07:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21104 to 21104. [2024-11-28 03:07:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21104 states, 20407 states have (on average 1.5689714313715881) internal successors, (32018), 20407 states have internal predecessors, (32018), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21104 states to 21104 states and 33408 transitions. [2024-11-28 03:08:00,016 INFO L78 Accepts]: Start accepts. Automaton has 21104 states and 33408 transitions. Word has length 2411 [2024-11-28 03:08:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:00,017 INFO L471 AbstractCegarLoop]: Abstraction has 21104 states and 33408 transitions. [2024-11-28 03:08:00,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 21104 states and 33408 transitions. [2024-11-28 03:08:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2413 [2024-11-28 03:08:00,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:00,065 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:00,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:00,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-11-28 03:08:00,265 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:00,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash 142400910, now seen corresponding path program 1 times [2024-11-28 03:08:00,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:00,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206254830] [2024-11-28 03:08:00,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:00,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206254830] [2024-11-28 03:08:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206254830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321078359] [2024-11-28 03:08:02,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:02,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:02,513 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:02,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-11-28 03:08:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:03,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 5328 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:08:03,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 30876 proven. 0 refuted. 0 times theorem prover too weak. 125364 trivial. 0 not checked. [2024-11-28 03:08:03,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:03,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321078359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:03,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:03,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:08:03,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391161680] [2024-11-28 03:08:03,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:03,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:08:03,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:03,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:08:03,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:03,810 INFO L87 Difference]: Start difference. First operand 21104 states and 33408 transitions. Second operand has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:03,960 INFO L93 Difference]: Finished difference Result 35223 states and 55251 transitions. [2024-11-28 03:08:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:08:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2412 [2024-11-28 03:08:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:03,988 INFO L225 Difference]: With dead ends: 35223 [2024-11-28 03:08:03,988 INFO L226 Difference]: Without dead ends: 21204 [2024-11-28 03:08:04,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2417 GetRequests, 2411 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:04,002 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:04,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21204 states. [2024-11-28 03:08:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21204 to 21204. [2024-11-28 03:08:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21204 states, 20507 states have (on average 1.5686351002096846) internal successors, (32168), 20507 states have internal predecessors, (32168), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21204 states to 21204 states and 33558 transitions. [2024-11-28 03:08:04,449 INFO L78 Accepts]: Start accepts. Automaton has 21204 states and 33558 transitions. Word has length 2412 [2024-11-28 03:08:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:04,451 INFO L471 AbstractCegarLoop]: Abstraction has 21204 states and 33558 transitions. [2024-11-28 03:08:04,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 21204 states and 33558 transitions. [2024-11-28 03:08:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2413 [2024-11-28 03:08:04,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:04,499 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:04,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-11-28 03:08:04,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-11-28 03:08:04,699 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:04,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1539143962, now seen corresponding path program 1 times [2024-11-28 03:08:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346372760] [2024-11-28 03:08:04,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:06,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346372760] [2024-11-28 03:08:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346372760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550388624] [2024-11-28 03:08:06,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:06,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:06,622 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:06,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-11-28 03:08:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:07,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 5328 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:08:07,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 31620 proven. 0 refuted. 0 times theorem prover too weak. 124620 trivial. 0 not checked. [2024-11-28 03:08:07,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550388624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:07,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:07,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:08:07,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206495850] [2024-11-28 03:08:07,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:07,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:08:07,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:07,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:08:07,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:07,950 INFO L87 Difference]: Start difference. First operand 21204 states and 33558 transitions. Second operand has 6 states, 5 states have (on average 204.2) internal successors, (1021), 6 states have internal predecessors, (1021), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:09,505 INFO L93 Difference]: Finished difference Result 35523 states and 55711 transitions. [2024-11-28 03:08:09,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:08:09,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 204.2) internal successors, (1021), 6 states have internal predecessors, (1021), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2412 [2024-11-28 03:08:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:09,533 INFO L225 Difference]: With dead ends: 35523 [2024-11-28 03:08:09,533 INFO L226 Difference]: Without dead ends: 21224 [2024-11-28 03:08:09,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2417 GetRequests, 2411 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:09,546 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:09,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:08:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21224 states. [2024-11-28 03:08:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21224 to 21224. [2024-11-28 03:08:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21224 states, 20527 states have (on average 1.5680810639645346) internal successors, (32188), 20527 states have internal predecessors, (32188), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21224 states to 21224 states and 33578 transitions. [2024-11-28 03:08:09,884 INFO L78 Accepts]: Start accepts. Automaton has 21224 states and 33578 transitions. Word has length 2412 [2024-11-28 03:08:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:09,885 INFO L471 AbstractCegarLoop]: Abstraction has 21224 states and 33578 transitions. [2024-11-28 03:08:09,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 204.2) internal successors, (1021), 6 states have internal predecessors, (1021), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 21224 states and 33578 transitions. [2024-11-28 03:08:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2414 [2024-11-28 03:08:09,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:09,931 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:09,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2024-11-28 03:08:10,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-11-28 03:08:10,131 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:10,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash 640238737, now seen corresponding path program 1 times [2024-11-28 03:08:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:10,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254479818] [2024-11-28 03:08:10,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254479818] [2024-11-28 03:08:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254479818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725997045] [2024-11-28 03:08:12,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:12,090 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:12,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-11-28 03:08:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:13,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 5331 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:08:13,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 31744 proven. 0 refuted. 0 times theorem prover too weak. 124496 trivial. 0 not checked. [2024-11-28 03:08:13,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725997045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:13,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:13,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:08:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276882954] [2024-11-28 03:08:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:13,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:08:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:13,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:08:13,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:13,325 INFO L87 Difference]: Start difference. First operand 21224 states and 33578 transitions. Second operand has 4 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:13,460 INFO L93 Difference]: Finished difference Result 35723 states and 56011 transitions. [2024-11-28 03:08:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:08:13,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2413 [2024-11-28 03:08:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:13,488 INFO L225 Difference]: With dead ends: 35723 [2024-11-28 03:08:13,488 INFO L226 Difference]: Without dead ends: 21314 [2024-11-28 03:08:13,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 2412 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:13,501 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:13,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21314 states. [2024-11-28 03:08:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21314 to 21314. [2024-11-28 03:08:13,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21314 states, 20617 states have (on average 1.5675413493718775) internal successors, (32318), 20617 states have internal predecessors, (32318), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21314 states to 21314 states and 33708 transitions. [2024-11-28 03:08:13,833 INFO L78 Accepts]: Start accepts. Automaton has 21314 states and 33708 transitions. Word has length 2413 [2024-11-28 03:08:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:13,834 INFO L471 AbstractCegarLoop]: Abstraction has 21314 states and 33708 transitions. [2024-11-28 03:08:13,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 21314 states and 33708 transitions. [2024-11-28 03:08:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2414 [2024-11-28 03:08:13,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:13,877 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:13,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-11-28 03:08:14,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2024-11-28 03:08:14,078 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:14,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1731922411, now seen corresponding path program 1 times [2024-11-28 03:08:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653175943] [2024-11-28 03:08:14,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:16,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653175943] [2024-11-28 03:08:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653175943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:16,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793458575] [2024-11-28 03:08:16,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:16,298 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:16,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-11-28 03:08:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:17,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 5331 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:08:17,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 31744 proven. 0 refuted. 0 times theorem prover too weak. 124496 trivial. 0 not checked. [2024-11-28 03:08:17,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:17,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793458575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:17,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:17,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:08:17,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571897483] [2024-11-28 03:08:17,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:17,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:08:17,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:17,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:08:17,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:17,501 INFO L87 Difference]: Start difference. First operand 21314 states and 33708 transitions. Second operand has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:17,614 INFO L93 Difference]: Finished difference Result 35693 states and 55941 transitions. [2024-11-28 03:08:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:08:17,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2413 [2024-11-28 03:08:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:17,643 INFO L225 Difference]: With dead ends: 35693 [2024-11-28 03:08:17,643 INFO L226 Difference]: Without dead ends: 21324 [2024-11-28 03:08:17,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 2413 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:17,657 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:17,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21324 states. [2024-11-28 03:08:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21324 to 21324. [2024-11-28 03:08:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21324 states, 20627 states have (on average 1.5667814030154652) internal successors, (32318), 20627 states have internal predecessors, (32318), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21324 states to 21324 states and 33708 transitions. [2024-11-28 03:08:17,967 INFO L78 Accepts]: Start accepts. Automaton has 21324 states and 33708 transitions. Word has length 2413 [2024-11-28 03:08:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:17,968 INFO L471 AbstractCegarLoop]: Abstraction has 21324 states and 33708 transitions. [2024-11-28 03:08:17,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 21324 states and 33708 transitions. [2024-11-28 03:08:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2415 [2024-11-28 03:08:18,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:18,011 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:18,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2024-11-28 03:08:18,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2024-11-28 03:08:18,212 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:18,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash 254110228, now seen corresponding path program 1 times [2024-11-28 03:08:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574377875] [2024-11-28 03:08:18,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:18,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574377875] [2024-11-28 03:08:20,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574377875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820084023] [2024-11-28 03:08:20,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:20,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:20,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:20,293 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:20,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-11-28 03:08:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:21,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 5334 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:08:21,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 32485 proven. 0 refuted. 0 times theorem prover too weak. 123755 trivial. 0 not checked. [2024-11-28 03:08:21,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820084023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:21,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:21,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:08:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543335472] [2024-11-28 03:08:21,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:21,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:08:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:21,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:08:21,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:21,516 INFO L87 Difference]: Start difference. First operand 21324 states and 33708 transitions. Second operand has 6 states, 5 states have (on average 204.6) internal successors, (1023), 6 states have internal predecessors, (1023), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:23,158 INFO L93 Difference]: Finished difference Result 36113 states and 56591 transitions. [2024-11-28 03:08:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:08:23,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 204.6) internal successors, (1023), 6 states have internal predecessors, (1023), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2414 [2024-11-28 03:08:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:23,188 INFO L225 Difference]: With dead ends: 36113 [2024-11-28 03:08:23,188 INFO L226 Difference]: Without dead ends: 21344 [2024-11-28 03:08:23,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2419 GetRequests, 2413 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:23,201 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:23,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:08:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21344 states. [2024-11-28 03:08:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21344 to 21344. [2024-11-28 03:08:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21344 states, 20647 states have (on average 1.5662323824284399) internal successors, (32338), 20647 states have internal predecessors, (32338), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21344 states to 21344 states and 33728 transitions. [2024-11-28 03:08:23,560 INFO L78 Accepts]: Start accepts. Automaton has 21344 states and 33728 transitions. Word has length 2414 [2024-11-28 03:08:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:23,561 INFO L471 AbstractCegarLoop]: Abstraction has 21344 states and 33728 transitions. [2024-11-28 03:08:23,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 204.6) internal successors, (1023), 6 states have internal predecessors, (1023), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 21344 states and 33728 transitions. [2024-11-28 03:08:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2416 [2024-11-28 03:08:23,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:23,606 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:23,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:23,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2024-11-28 03:08:23,807 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:23,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash 251536417, now seen corresponding path program 1 times [2024-11-28 03:08:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:23,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74896791] [2024-11-28 03:08:23,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74896791] [2024-11-28 03:08:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74896791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833399525] [2024-11-28 03:08:26,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:26,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:26,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:26,096 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:26,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-11-28 03:08:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:27,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 5337 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:08:27,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 32604 proven. 0 refuted. 0 times theorem prover too weak. 123636 trivial. 0 not checked. [2024-11-28 03:08:27,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833399525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:27,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:27,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:08:27,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080877683] [2024-11-28 03:08:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:27,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:08:27,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:27,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:08:27,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:27,226 INFO L87 Difference]: Start difference. First operand 21344 states and 33728 transitions. Second operand has 4 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:27,363 INFO L93 Difference]: Finished difference Result 36313 states and 56891 transitions. [2024-11-28 03:08:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:08:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2415 [2024-11-28 03:08:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:27,390 INFO L225 Difference]: With dead ends: 36313 [2024-11-28 03:08:27,390 INFO L226 Difference]: Without dead ends: 21434 [2024-11-28 03:08:27,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2420 GetRequests, 2414 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:27,403 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:27,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21434 states. [2024-11-28 03:08:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21434 to 21434. [2024-11-28 03:08:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21434 states, 20737 states have (on average 1.5657038144379611) internal successors, (32468), 20737 states have internal predecessors, (32468), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21434 states to 21434 states and 33858 transitions. [2024-11-28 03:08:27,815 INFO L78 Accepts]: Start accepts. Automaton has 21434 states and 33858 transitions. Word has length 2415 [2024-11-28 03:08:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:27,816 INFO L471 AbstractCegarLoop]: Abstraction has 21434 states and 33858 transitions. [2024-11-28 03:08:27,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 21434 states and 33858 transitions. [2024-11-28 03:08:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2416 [2024-11-28 03:08:27,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:27,860 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:27,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-11-28 03:08:28,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-11-28 03:08:28,060 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:28,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1663671431, now seen corresponding path program 1 times [2024-11-28 03:08:28,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:28,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575698558] [2024-11-28 03:08:28,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:28,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575698558] [2024-11-28 03:08:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575698558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094711104] [2024-11-28 03:08:30,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:30,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:30,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:30,153 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:30,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-11-28 03:08:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:31,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 5337 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:08:31,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 32604 proven. 0 refuted. 0 times theorem prover too weak. 123636 trivial. 0 not checked. [2024-11-28 03:08:31,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094711104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:08:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530949144] [2024-11-28 03:08:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:31,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:08:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:31,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:08:31,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:31,414 INFO L87 Difference]: Start difference. First operand 21434 states and 33858 transitions. Second operand has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:31,540 INFO L93 Difference]: Finished difference Result 36283 states and 56821 transitions. [2024-11-28 03:08:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:08:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2415 [2024-11-28 03:08:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:31,569 INFO L225 Difference]: With dead ends: 36283 [2024-11-28 03:08:31,569 INFO L226 Difference]: Without dead ends: 21444 [2024-11-28 03:08:31,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2420 GetRequests, 2415 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:31,583 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:31,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21444 states. [2024-11-28 03:08:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21444 to 21444. [2024-11-28 03:08:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21444 states, 20747 states have (on average 1.564949149274594) internal successors, (32468), 20747 states have internal predecessors, (32468), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21444 states to 21444 states and 33858 transitions. [2024-11-28 03:08:31,927 INFO L78 Accepts]: Start accepts. Automaton has 21444 states and 33858 transitions. Word has length 2415 [2024-11-28 03:08:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:31,928 INFO L471 AbstractCegarLoop]: Abstraction has 21444 states and 33858 transitions. [2024-11-28 03:08:31,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 21444 states and 33858 transitions. [2024-11-28 03:08:31,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2417 [2024-11-28 03:08:31,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:31,974 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:31,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:32,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:32,174 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:32,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2032488614, now seen corresponding path program 1 times [2024-11-28 03:08:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955678927] [2024-11-28 03:08:32,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:32,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955678927] [2024-11-28 03:08:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955678927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7427499] [2024-11-28 03:08:34,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:34,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:34,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:34,398 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-11-28 03:08:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:35,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 5340 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:08:35,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 33342 proven. 0 refuted. 0 times theorem prover too weak. 122898 trivial. 0 not checked. [2024-11-28 03:08:35,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7427499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:35,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:08:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672208443] [2024-11-28 03:08:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:35,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:08:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:35,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:08:35,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:35,715 INFO L87 Difference]: Start difference. First operand 21444 states and 33858 transitions. Second operand has 6 states, 5 states have (on average 205.0) internal successors, (1025), 6 states have internal predecessors, (1025), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:37,502 INFO L93 Difference]: Finished difference Result 36703 states and 57471 transitions. [2024-11-28 03:08:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:08:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 205.0) internal successors, (1025), 6 states have internal predecessors, (1025), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2416 [2024-11-28 03:08:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:37,534 INFO L225 Difference]: With dead ends: 36703 [2024-11-28 03:08:37,534 INFO L226 Difference]: Without dead ends: 21464 [2024-11-28 03:08:37,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2421 GetRequests, 2415 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:37,548 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:37,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:08:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21464 states. [2024-11-28 03:08:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21464 to 21464. [2024-11-28 03:08:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21464 states, 20767 states have (on average 1.564405065729282) internal successors, (32488), 20767 states have internal predecessors, (32488), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21464 states to 21464 states and 33878 transitions. [2024-11-28 03:08:38,066 INFO L78 Accepts]: Start accepts. Automaton has 21464 states and 33878 transitions. Word has length 2416 [2024-11-28 03:08:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:38,067 INFO L471 AbstractCegarLoop]: Abstraction has 21464 states and 33878 transitions. [2024-11-28 03:08:38,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 205.0) internal successors, (1025), 6 states have internal predecessors, (1025), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 21464 states and 33878 transitions. [2024-11-28 03:08:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2418 [2024-11-28 03:08:38,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:38,114 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:38,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-11-28 03:08:38,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:38,314 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:38,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 229782229, now seen corresponding path program 1 times [2024-11-28 03:08:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:38,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252589722] [2024-11-28 03:08:38,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:40,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:40,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252589722] [2024-11-28 03:08:40,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252589722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:40,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22074022] [2024-11-28 03:08:40,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:40,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:40,238 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:40,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-11-28 03:08:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:41,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 5343 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:08:41,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 33456 proven. 0 refuted. 0 times theorem prover too weak. 122784 trivial. 0 not checked. [2024-11-28 03:08:41,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22074022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:41,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:08:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354014905] [2024-11-28 03:08:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:41,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:08:41,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:41,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:08:41,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:41,356 INFO L87 Difference]: Start difference. First operand 21464 states and 33878 transitions. Second operand has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:41,501 INFO L93 Difference]: Finished difference Result 36903 states and 57771 transitions. [2024-11-28 03:08:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:08:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2417 [2024-11-28 03:08:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:41,529 INFO L225 Difference]: With dead ends: 36903 [2024-11-28 03:08:41,529 INFO L226 Difference]: Without dead ends: 21554 [2024-11-28 03:08:41,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2422 GetRequests, 2416 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:41,543 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:41,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21554 states. [2024-11-28 03:08:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21554 to 21554. [2024-11-28 03:08:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21554 states, 20857 states have (on average 1.563887423886465) internal successors, (32618), 20857 states have internal predecessors, (32618), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21554 states to 21554 states and 34008 transitions. [2024-11-28 03:08:41,890 INFO L78 Accepts]: Start accepts. Automaton has 21554 states and 34008 transitions. Word has length 2417 [2024-11-28 03:08:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:41,891 INFO L471 AbstractCegarLoop]: Abstraction has 21554 states and 34008 transitions. [2024-11-28 03:08:41,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 21554 states and 34008 transitions. [2024-11-28 03:08:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2418 [2024-11-28 03:08:41,934 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:41,935 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:41,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-11-28 03:08:42,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:42,135 INFO L396 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:42,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1654596783, now seen corresponding path program 1 times [2024-11-28 03:08:42,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583097032] [2024-11-28 03:08:42,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:42,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:44,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583097032] [2024-11-28 03:08:44,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583097032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968932614] [2024-11-28 03:08:44,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:44,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:44,124 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:44,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-11-28 03:08:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:45,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 5343 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:08:45,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 33456 proven. 0 refuted. 0 times theorem prover too weak. 122784 trivial. 0 not checked. [2024-11-28 03:08:45,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:45,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968932614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:45,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:45,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:08:45,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483953784] [2024-11-28 03:08:45,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:45,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:08:45,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:45,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:08:45,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:45,269 INFO L87 Difference]: Start difference. First operand 21554 states and 34008 transitions. Second operand has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:45,375 INFO L93 Difference]: Finished difference Result 36873 states and 57701 transitions. [2024-11-28 03:08:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:08:45,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2417 [2024-11-28 03:08:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:45,401 INFO L225 Difference]: With dead ends: 36873 [2024-11-28 03:08:45,401 INFO L226 Difference]: Without dead ends: 21564 [2024-11-28 03:08:45,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2422 GetRequests, 2417 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:45,414 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:45,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21564 states. [2024-11-28 03:08:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21564 to 21564. [2024-11-28 03:08:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21564 states, 20867 states have (on average 1.5631379690420282) internal successors, (32618), 20867 states have internal predecessors, (32618), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21564 states to 21564 states and 34008 transitions. [2024-11-28 03:08:45,714 INFO L78 Accepts]: Start accepts. Automaton has 21564 states and 34008 transitions. Word has length 2417 [2024-11-28 03:08:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:45,715 INFO L471 AbstractCegarLoop]: Abstraction has 21564 states and 34008 transitions. [2024-11-28 03:08:45,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21564 states and 34008 transitions. [2024-11-28 03:08:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2419 [2024-11-28 03:08:45,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:45,758 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:45,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-11-28 03:08:45,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:45,958 INFO L396 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:45,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash -857653932, now seen corresponding path program 1 times [2024-11-28 03:08:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075216022] [2024-11-28 03:08:45,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:45,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075216022] [2024-11-28 03:08:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075216022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356480215] [2024-11-28 03:08:47,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:47,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:47,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:47,817 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:47,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-11-28 03:08:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:48,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 5346 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:08:48,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 34191 proven. 0 refuted. 0 times theorem prover too weak. 122049 trivial. 0 not checked. [2024-11-28 03:08:48,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:48,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356480215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:48,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:48,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:08:48,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311749600] [2024-11-28 03:08:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:48,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:08:48,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:48,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:08:48,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:48,972 INFO L87 Difference]: Start difference. First operand 21564 states and 34008 transitions. Second operand has 6 states, 5 states have (on average 205.4) internal successors, (1027), 6 states have internal predecessors, (1027), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:50,765 INFO L93 Difference]: Finished difference Result 37293 states and 58351 transitions. [2024-11-28 03:08:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:08:50,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 205.4) internal successors, (1027), 6 states have internal predecessors, (1027), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2418 [2024-11-28 03:08:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:50,789 INFO L225 Difference]: With dead ends: 37293 [2024-11-28 03:08:50,789 INFO L226 Difference]: Without dead ends: 21584 [2024-11-28 03:08:50,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2423 GetRequests, 2417 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:50,797 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 1 mSDsluCounter, 16655 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20962 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:50,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20962 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:08:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21584 states. [2024-11-28 03:08:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21584 to 21584. [2024-11-28 03:08:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21584 states, 20887 states have (on average 1.5625987456312538) internal successors, (32638), 20887 states have internal predecessors, (32638), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21584 states to 21584 states and 34028 transitions. [2024-11-28 03:08:51,123 INFO L78 Accepts]: Start accepts. Automaton has 21584 states and 34028 transitions. Word has length 2418 [2024-11-28 03:08:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:51,124 INFO L471 AbstractCegarLoop]: Abstraction has 21584 states and 34028 transitions. [2024-11-28 03:08:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 205.4) internal successors, (1027), 6 states have internal predecessors, (1027), 3 states have call successors, (280), 2 states have call predecessors, (280), 3 states have return successors, (280), 2 states have call predecessors, (280), 3 states have call successors, (280) [2024-11-28 03:08:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 21584 states and 34028 transitions. [2024-11-28 03:08:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2420 [2024-11-28 03:08:51,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:51,167 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:51,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2024-11-28 03:08:51,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2024-11-28 03:08:51,367 INFO L396 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:51,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1391461187, now seen corresponding path program 1 times [2024-11-28 03:08:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:51,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634578012] [2024-11-28 03:08:51,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:53,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:53,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634578012] [2024-11-28 03:08:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634578012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:53,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128494616] [2024-11-28 03:08:53,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:53,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:53,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:53,330 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:53,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-11-28 03:08:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:54,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 5349 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:08:54,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 34300 proven. 0 refuted. 0 times theorem prover too weak. 121940 trivial. 0 not checked. [2024-11-28 03:08:54,542 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:54,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128494616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:54,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:54,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:08:54,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603292689] [2024-11-28 03:08:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:54,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:08:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:54,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:08:54,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:54,545 INFO L87 Difference]: Start difference. First operand 21584 states and 34028 transitions. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:54,659 INFO L93 Difference]: Finished difference Result 37333 states and 58401 transitions. [2024-11-28 03:08:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:08:54,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2419 [2024-11-28 03:08:54,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:54,689 INFO L225 Difference]: With dead ends: 37333 [2024-11-28 03:08:54,689 INFO L226 Difference]: Without dead ends: 21594 [2024-11-28 03:08:54,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2424 GetRequests, 2419 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:54,702 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:54,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2024-11-28 03:08:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 21594. [2024-11-28 03:08:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21594 states, 20897 states have (on average 1.5623295209838732) internal successors, (32648), 20897 states have internal predecessors, (32648), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21594 states to 21594 states and 34038 transitions. [2024-11-28 03:08:55,029 INFO L78 Accepts]: Start accepts. Automaton has 21594 states and 34038 transitions. Word has length 2419 [2024-11-28 03:08:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:55,030 INFO L471 AbstractCegarLoop]: Abstraction has 21594 states and 34038 transitions. [2024-11-28 03:08:55,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 21594 states and 34038 transitions. [2024-11-28 03:08:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2420 [2024-11-28 03:08:55,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:55,072 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:55,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2024-11-28 03:08:55,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:55,272 INFO L396 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:55,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -323221667, now seen corresponding path program 1 times [2024-11-28 03:08:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616744406] [2024-11-28 03:08:55,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:08:57,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:57,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616744406] [2024-11-28 03:08:57,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616744406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894811062] [2024-11-28 03:08:57,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:57,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:57,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:57,209 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:57,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-11-28 03:08:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:58,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 5349 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:08:58,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 34300 proven. 0 refuted. 0 times theorem prover too weak. 121940 trivial. 0 not checked. [2024-11-28 03:08:58,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894811062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:58,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:58,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:08:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217171131] [2024-11-28 03:08:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:58,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:08:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:58,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:08:58,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:58,379 INFO L87 Difference]: Start difference. First operand 21594 states and 34038 transitions. Second operand has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:58,509 INFO L93 Difference]: Finished difference Result 37523 states and 58681 transitions. [2024-11-28 03:08:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:08:58,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2419 [2024-11-28 03:08:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:58,536 INFO L225 Difference]: With dead ends: 37523 [2024-11-28 03:08:58,537 INFO L226 Difference]: Without dead ends: 21684 [2024-11-28 03:08:58,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2424 GetRequests, 2418 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:58,550 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:58,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21684 states. [2024-11-28 03:08:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21684 to 21684. [2024-11-28 03:08:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21684 states, 20987 states have (on average 1.5613475008338495) internal successors, (32768), 20987 states have internal predecessors, (32768), 695 states have call successors, (695), 1 states have call predecessors, (695), 1 states have return successors, (695), 695 states have call predecessors, (695), 695 states have call successors, (695) [2024-11-28 03:08:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21684 states to 21684 states and 34158 transitions. [2024-11-28 03:08:58,901 INFO L78 Accepts]: Start accepts. Automaton has 21684 states and 34158 transitions. Word has length 2419 [2024-11-28 03:08:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:58,902 INFO L471 AbstractCegarLoop]: Abstraction has 21684 states and 34158 transitions. [2024-11-28 03:08:58,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:08:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 21684 states and 34158 transitions. [2024-11-28 03:08:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2421 [2024-11-28 03:08:58,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:58,945 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:58,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:59,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-11-28 03:08:59,145 INFO L396 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:59,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash 937334170, now seen corresponding path program 1 times [2024-11-28 03:08:59,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:59,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372260043] [2024-11-28 03:08:59,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372260043] [2024-11-28 03:09:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372260043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:01,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801751479] [2024-11-28 03:09:01,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:01,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:01,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:01,255 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:01,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2024-11-28 03:09:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:02,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:09:02,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 2224 proven. 0 refuted. 0 times theorem prover too weak. 154016 trivial. 0 not checked. [2024-11-28 03:09:03,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:03,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801751479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:03,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:03,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:09:03,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171203095] [2024-11-28 03:09:03,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:03,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:09:03,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:03,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:09:03,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:03,027 INFO L87 Difference]: Start difference. First operand 21684 states and 34158 transitions. Second operand has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-28 03:09:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:03,288 INFO L93 Difference]: Finished difference Result 54545 states and 85139 transitions. [2024-11-28 03:09:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:09:03,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) Word has length 2420 [2024-11-28 03:09:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:03,474 INFO L225 Difference]: With dead ends: 54545 [2024-11-28 03:09:03,474 INFO L226 Difference]: Without dead ends: 38192 [2024-11-28 03:09:03,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2425 GetRequests, 2419 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:03,483 INFO L435 NwaCegarLoop]: 5523 mSDtfsCounter, 1518 mSDsluCounter, 9137 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 14660 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:03,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 14660 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:09:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38192 states. [2024-11-28 03:09:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38192 to 38170. [2024-11-28 03:09:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38170 states, 37127 states have (on average 1.5534247313276053) internal successors, (57674), 37127 states have internal predecessors, (57674), 1041 states have call successors, (1041), 1 states have call predecessors, (1041), 1 states have return successors, (1041), 1041 states have call predecessors, (1041), 1041 states have call successors, (1041) [2024-11-28 03:09:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38170 states to 38170 states and 59756 transitions. [2024-11-28 03:09:04,023 INFO L78 Accepts]: Start accepts. Automaton has 38170 states and 59756 transitions. Word has length 2420 [2024-11-28 03:09:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:04,024 INFO L471 AbstractCegarLoop]: Abstraction has 38170 states and 59756 transitions. [2024-11-28 03:09:04,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-28 03:09:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 38170 states and 59756 transitions. [2024-11-28 03:09:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2421 [2024-11-28 03:09:04,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:04,088 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:04,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2024-11-28 03:09:04,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:04,288 INFO L396 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:04,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 668646310, now seen corresponding path program 1 times [2024-11-28 03:09:04,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:04,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37840449] [2024-11-28 03:09:04,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37840449] [2024-11-28 03:09:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37840449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222480528] [2024-11-28 03:09:06,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:06,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:06,418 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:06,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2024-11-28 03:09:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:07,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:09:07,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 2224 proven. 0 refuted. 0 times theorem prover too weak. 154016 trivial. 0 not checked. [2024-11-28 03:09:07,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222480528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:07,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:07,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:09:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597414987] [2024-11-28 03:09:07,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:07,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:09:07,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:07,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:09:07,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:07,915 INFO L87 Difference]: Start difference. First operand 38170 states and 59756 transitions. Second operand has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:09:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:08,095 INFO L93 Difference]: Finished difference Result 38623 states and 60439 transitions. [2024-11-28 03:09:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:09:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2420 [2024-11-28 03:09:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:08,144 INFO L225 Difference]: With dead ends: 38623 [2024-11-28 03:09:08,144 INFO L226 Difference]: Without dead ends: 38248 [2024-11-28 03:09:08,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2425 GetRequests, 2419 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:08,156 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:08,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:09:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38248 states. [2024-11-28 03:09:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38248 to 38248. [2024-11-28 03:09:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38248 states, 37205 states have (on average 1.5532320924606908) internal successors, (57788), 37205 states have internal predecessors, (57788), 1041 states have call successors, (1041), 1 states have call predecessors, (1041), 1 states have return successors, (1041), 1041 states have call predecessors, (1041), 1041 states have call successors, (1041) [2024-11-28 03:09:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38248 states to 38248 states and 59870 transitions. [2024-11-28 03:09:08,778 INFO L78 Accepts]: Start accepts. Automaton has 38248 states and 59870 transitions. Word has length 2420 [2024-11-28 03:09:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:08,780 INFO L471 AbstractCegarLoop]: Abstraction has 38248 states and 59870 transitions. [2024-11-28 03:09:08,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:09:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 38248 states and 59870 transitions. [2024-11-28 03:09:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2421 [2024-11-28 03:09:08,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:08,846 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:08,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2024-11-28 03:09:09,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:09,046 INFO L396 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:09,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1936496512, now seen corresponding path program 1 times [2024-11-28 03:09:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:09,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184327562] [2024-11-28 03:09:09,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:11,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184327562] [2024-11-28 03:09:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184327562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306117279] [2024-11-28 03:09:11,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:11,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:11,347 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:11,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2024-11-28 03:09:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:12,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:09:12,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 2224 proven. 0 refuted. 0 times theorem prover too weak. 154016 trivial. 0 not checked. [2024-11-28 03:09:13,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:13,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306117279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:13,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:09:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845442369] [2024-11-28 03:09:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:13,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:09:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:13,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:09:13,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:13,008 INFO L87 Difference]: Start difference. First operand 38248 states and 59870 transitions. Second operand has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-28 03:09:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:13,354 INFO L93 Difference]: Finished difference Result 86681 states and 134913 transitions. [2024-11-28 03:09:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:09:13,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) Word has length 2420 [2024-11-28 03:09:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:13,426 INFO L225 Difference]: With dead ends: 86681 [2024-11-28 03:09:13,426 INFO L226 Difference]: Without dead ends: 70314 [2024-11-28 03:09:13,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2425 GetRequests, 2419 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:13,451 INFO L435 NwaCegarLoop]: 5959 mSDtfsCounter, 2932 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 10572 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:13,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2933 Valid, 10572 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:09:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70314 states. [2024-11-28 03:09:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70314 to 70202. [2024-11-28 03:09:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70202 states, 68487 states have (on average 1.5472133397579102) internal successors, (105964), 68487 states have internal predecessors, (105964), 1713 states have call successors, (1713), 1 states have call predecessors, (1713), 1 states have return successors, (1713), 1713 states have call predecessors, (1713), 1713 states have call successors, (1713) [2024-11-28 03:09:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70202 states to 70202 states and 109390 transitions. [2024-11-28 03:09:14,612 INFO L78 Accepts]: Start accepts. Automaton has 70202 states and 109390 transitions. Word has length 2420 [2024-11-28 03:09:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:14,614 INFO L471 AbstractCegarLoop]: Abstraction has 70202 states and 109390 transitions. [2024-11-28 03:09:14,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-28 03:09:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 70202 states and 109390 transitions. [2024-11-28 03:09:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2421 [2024-11-28 03:09:14,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:14,702 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:14,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2024-11-28 03:09:14,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2024-11-28 03:09:14,902 INFO L396 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:14,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1293503502, now seen corresponding path program 1 times [2024-11-28 03:09:14,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586090424] [2024-11-28 03:09:14,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:17,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:17,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586090424] [2024-11-28 03:09:17,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586090424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245008981] [2024-11-28 03:09:17,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:17,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:17,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:17,080 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:17,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2024-11-28 03:09:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:18,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:09:18,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 34300 proven. 0 refuted. 0 times theorem prover too weak. 121940 trivial. 0 not checked. [2024-11-28 03:09:18,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245008981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:18,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:09:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180789042] [2024-11-28 03:09:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:18,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:09:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:18,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:09:18,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:18,187 INFO L87 Difference]: Start difference. First operand 70202 states and 109390 transitions. Second operand has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:09:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:18,685 INFO L93 Difference]: Finished difference Result 134039 states and 208315 transitions. [2024-11-28 03:09:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:09:18,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2420 [2024-11-28 03:09:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:18,755 INFO L225 Difference]: With dead ends: 134039 [2024-11-28 03:09:18,755 INFO L226 Difference]: Without dead ends: 70762 [2024-11-28 03:09:18,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2425 GetRequests, 2419 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:18,787 INFO L435 NwaCegarLoop]: 4587 mSDtfsCounter, 9 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13748 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:18,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13748 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:09:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70762 states. [2024-11-28 03:09:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70762 to 70732. [2024-11-28 03:09:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70732 states, 69017 states have (on average 1.5470681136531579) internal successors, (106774), 69017 states have internal predecessors, (106774), 1713 states have call successors, (1713), 1 states have call predecessors, (1713), 1 states have return successors, (1713), 1713 states have call predecessors, (1713), 1713 states have call successors, (1713) [2024-11-28 03:09:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70732 states to 70732 states and 110200 transitions. [2024-11-28 03:09:20,460 INFO L78 Accepts]: Start accepts. Automaton has 70732 states and 110200 transitions. Word has length 2420 [2024-11-28 03:09:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:20,461 INFO L471 AbstractCegarLoop]: Abstraction has 70732 states and 110200 transitions. [2024-11-28 03:09:20,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:09:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 70732 states and 110200 transitions. [2024-11-28 03:09:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2421 [2024-11-28 03:09:20,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:20,554 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:20,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2024-11-28 03:09:20,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2024-11-28 03:09:20,755 INFO L396 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:20,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1065411828, now seen corresponding path program 1 times [2024-11-28 03:09:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:20,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672392262] [2024-11-28 03:09:20,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672392262] [2024-11-28 03:09:22,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672392262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173790915] [2024-11-28 03:09:22,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:22,899 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:22,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2024-11-28 03:09:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:24,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 5352 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:09:24,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 34300 proven. 0 refuted. 0 times theorem prover too weak. 121940 trivial. 0 not checked. [2024-11-28 03:09:24,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173790915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:24,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:09:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312597211] [2024-11-28 03:09:24,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:24,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:09:24,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:24,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:09:24,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:09:24,195 INFO L87 Difference]: Start difference. First operand 70732 states and 110200 transitions. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:09:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:24,805 INFO L93 Difference]: Finished difference Result 133519 states and 207395 transitions. [2024-11-28 03:09:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:09:24,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) Word has length 2420 [2024-11-28 03:09:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:24,907 INFO L225 Difference]: With dead ends: 133519 [2024-11-28 03:09:24,907 INFO L226 Difference]: Without dead ends: 70652 [2024-11-28 03:09:24,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2425 GetRequests, 2420 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:09:24,964 INFO L435 NwaCegarLoop]: 4590 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:24,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:09:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70652 states. [2024-11-28 03:09:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70652 to 70622. [2024-11-28 03:09:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70622 states, 68907 states have (on average 1.5461999506581334) internal successors, (106544), 68907 states have internal predecessors, (106544), 1713 states have call successors, (1713), 1 states have call predecessors, (1713), 1 states have return successors, (1713), 1713 states have call predecessors, (1713), 1713 states have call successors, (1713) [2024-11-28 03:09:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70622 states to 70622 states and 109970 transitions. [2024-11-28 03:09:26,380 INFO L78 Accepts]: Start accepts. Automaton has 70622 states and 109970 transitions. Word has length 2420 [2024-11-28 03:09:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:26,381 INFO L471 AbstractCegarLoop]: Abstraction has 70622 states and 109970 transitions. [2024-11-28 03:09:26,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 2 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 2 states have call predecessors, (280), 2 states have call successors, (280) [2024-11-28 03:09:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 70622 states and 109970 transitions. [2024-11-28 03:09:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2422 [2024-11-28 03:09:26,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:26,473 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:26,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2024-11-28 03:09:26,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:26,673 INFO L396 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:26,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1010610595, now seen corresponding path program 1 times [2024-11-28 03:09:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843869981] [2024-11-28 03:09:26,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:29,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:29,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843869981] [2024-11-28 03:09:29,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843869981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:29,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151242998] [2024-11-28 03:09:29,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:29,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:29,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:29,034 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:29,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2024-11-28 03:09:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:30,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 5355 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:09:30,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 2224 proven. 0 refuted. 0 times theorem prover too weak. 154016 trivial. 0 not checked. [2024-11-28 03:09:31,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151242998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:31,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:31,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:09:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561930016] [2024-11-28 03:09:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:31,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:09:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:31,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:09:31,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:31,127 INFO L87 Difference]: Start difference. First operand 70622 states and 109970 transitions. Second operand has 4 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-28 03:09:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:31,993 INFO L93 Difference]: Finished difference Result 118573 states and 184173 transitions. [2024-11-28 03:09:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:09:31,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) Word has length 2421 [2024-11-28 03:09:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:32,415 INFO L225 Difference]: With dead ends: 118573 [2024-11-28 03:09:32,415 INFO L226 Difference]: Without dead ends: 118168 [2024-11-28 03:09:32,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2426 GetRequests, 2420 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:32,432 INFO L435 NwaCegarLoop]: 5731 mSDtfsCounter, 2937 mSDsluCounter, 4586 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 10317 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:32,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 10317 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:09:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118168 states. [2024-11-28 03:09:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118168 to 70802. [2024-11-28 03:09:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70802 states, 69077 states have (on average 1.546592932524574) internal successors, (106834), 69077 states have internal predecessors, (106834), 1723 states have call successors, (1723), 1 states have call predecessors, (1723), 1 states have return successors, (1723), 1723 states have call predecessors, (1723), 1723 states have call successors, (1723) [2024-11-28 03:09:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70802 states to 70802 states and 110280 transitions. [2024-11-28 03:09:34,142 INFO L78 Accepts]: Start accepts. Automaton has 70802 states and 110280 transitions. Word has length 2421 [2024-11-28 03:09:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:34,144 INFO L471 AbstractCegarLoop]: Abstraction has 70802 states and 110280 transitions. [2024-11-28 03:09:34,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 4 states have call successors, (280), 2 states have call predecessors, (280), 2 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-28 03:09:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 70802 states and 110280 transitions. [2024-11-28 03:09:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2422 [2024-11-28 03:09:34,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:34,453 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 280, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:34,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2024-11-28 03:09:34,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:34,654 INFO L396 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:34,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1863220087, now seen corresponding path program 1 times [2024-11-28 03:09:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841956340] [2024-11-28 03:09:34,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 156240 backedges. 630 proven. 207 refuted. 0 times theorem prover too weak. 155403 trivial. 0 not checked. [2024-11-28 03:09:37,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841956340] [2024-11-28 03:09:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841956340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565396303] [2024-11-28 03:09:37,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:37,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:37,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:37,007 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:37,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59fec32-f7b6-4093-a454-1ffc5fdb2c4d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process