./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-090.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_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/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_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-090.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/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_b6361033-3582-4036-99ed-60e8c6cb428b/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 20304bce4ef03ad5f89af075dd784b96ba9cf71cfbfba5148bc3262c1794dc0c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:01:36,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:01:36,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:01:36,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:01:36,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:01:36,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:01:36,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:01:36,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:01:36,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:01:36,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:01:36,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:01:36,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:01:36,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:01:36,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:01:36,238 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:01:36,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:01:36,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:01:36,240 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:01:36,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:01:36,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:01:36,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:01:36,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:36,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:01:36,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:01:36,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:01:36,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:01:36,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:36,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:01:36,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:01:36,244 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_b6361033-3582-4036-99ed-60e8c6cb428b/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 -> 20304bce4ef03ad5f89af075dd784b96ba9cf71cfbfba5148bc3262c1794dc0c [2024-11-28 04:01:36,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:01:36,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:01:36,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:01:36,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:01:36,751 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:01:36,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-090.c [2024-11-28 04:01:40,968 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/data/c358c3c1d/c615b03db4a34002b59bfdaf1447375e/FLAGdf4bfa8f4 [2024-11-28 04:01:41,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:01:41,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/sv-benchmarks/c/xcsp/Dubois-090.c [2024-11-28 04:01:41,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/data/c358c3c1d/c615b03db4a34002b59bfdaf1447375e/FLAGdf4bfa8f4 [2024-11-28 04:01:41,759 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/data/c358c3c1d/c615b03db4a34002b59bfdaf1447375e [2024-11-28 04:01:41,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:01:41,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:01:41,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:41,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:01:41,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:01:41,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:41" (1/1) ... [2024-11-28 04:01:41,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e7a272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:41, skipping insertion in model container [2024-11-28 04:01:41,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:41" (1/1) ... [2024-11-28 04:01:41,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:01:43,081 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_b6361033-3582-4036-99ed-60e8c6cb428b/sv-benchmarks/c/xcsp/Dubois-090.c[64320,64333] [2024-11-28 04:01:43,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:43,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:01:43,727 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_b6361033-3582-4036-99ed-60e8c6cb428b/sv-benchmarks/c/xcsp/Dubois-090.c[64320,64333] [2024-11-28 04:01:43,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:43,803 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:01:43,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43 WrapperNode [2024-11-28 04:01:43,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:43,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:43,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:01:43,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:01:43,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:44,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:45,550 INFO L138 Inliner]: procedures = 13, calls = 727, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17926 [2024-11-28 04:01:45,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:45,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:01:45,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:01:45,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:01:45,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:45,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:45,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:46,128 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:01:46,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:46,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:46,677 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:46,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:46,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:47,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:47,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:47,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:01:47,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:01:47,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:01:47,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:01:47,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (1/1) ... [2024-11-28 04:01:47,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:47,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:47,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:01:47,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:01:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:01:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:01:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:01:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:01:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 04:01:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 04:01:48,526 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:01:48,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:02:32,315 INFO L? ?]: Removed 6215 outVars from TransFormulas that were not future-live. [2024-11-28 04:02:32,315 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:02:32,497 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:02:32,497 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:02:32,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:32 BoogieIcfgContainer [2024-11-28 04:02:32,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:02:32,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:02:32,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:02:32,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:02:32,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:01:41" (1/3) ... [2024-11-28 04:02:32,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbcfacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:32, skipping insertion in model container [2024-11-28 04:02:32,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:43" (2/3) ... [2024-11-28 04:02:32,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbcfacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:32, skipping insertion in model container [2024-11-28 04:02:32,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:32" (3/3) ... [2024-11-28 04:02:32,516 INFO L128 eAbstractionObserver]: Analyzing ICFG Dubois-090.c [2024-11-28 04:02:32,538 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:02:32,541 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-090.c that has 2 procedures, 7121 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:02:32,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:32,977 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;@c2e1f27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:32,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:02:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 7121 states, 6398 states have (on average 1.6192560175054704) internal successors, (10360), 6399 states have internal predecessors, (10360), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-28 04:02:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6034 [2024-11-28 04:02:33,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:33,649 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:33,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:33,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash -94916771, now seen corresponding path program 1 times [2024-11-28 04:02:33,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:33,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977196144] [2024-11-28 04:02:33,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 0 proven. 1438 refuted. 0 times theorem prover too weak. 1033922 trivial. 0 not checked. [2024-11-28 04:02:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977196144] [2024-11-28 04:02:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977196144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692933438] [2024-11-28 04:02:49,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:49,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:49,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:49,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:02:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:54,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 13166 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:02:54,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1438 proven. 0 refuted. 0 times theorem prover too weak. 1033922 trivial. 0 not checked. [2024-11-28 04:02:55,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:02:55,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692933438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:55,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:02:55,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:02:55,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86192627] [2024-11-28 04:02:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:55,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:02:55,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:55,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:02:55,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:02:55,610 INFO L87 Difference]: Start difference. First operand has 7121 states, 6398 states have (on average 1.6192560175054704) internal successors, (10360), 6399 states have internal predecessors, (10360), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) Second operand has 2 states, 2 states have (on average 1219.0) internal successors, (2438), 2 states have internal predecessors, (2438), 2 states have call successors, (720), 2 states have call predecessors, (720), 1 states have return successors, (720), 1 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:02:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:56,205 INFO L93 Difference]: Finished difference Result 14236 states and 24314 transitions. [2024-11-28 04:02:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:02:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1219.0) internal successors, (2438), 2 states have internal predecessors, (2438), 2 states have call successors, (720), 2 states have call predecessors, (720), 1 states have return successors, (720), 1 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6033 [2024-11-28 04:02:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:56,281 INFO L225 Difference]: With dead ends: 14236 [2024-11-28 04:02:56,281 INFO L226 Difference]: Without dead ends: 7118 [2024-11-28 04:02:56,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6034 GetRequests, 6034 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:02:56,325 INFO L435 NwaCegarLoop]: 11796 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, 11796 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:56,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11796 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:02:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2024-11-28 04:02:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 7118. [2024-11-28 04:02:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 6396 states have (on average 1.6191369606003752) internal successors, (10356), 6396 states have internal predecessors, (10356), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-28 04:02:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 11796 transitions. [2024-11-28 04:02:57,980 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 11796 transitions. Word has length 6033 [2024-11-28 04:02:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:57,986 INFO L471 AbstractCegarLoop]: Abstraction has 7118 states and 11796 transitions. [2024-11-28 04:02:57,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1219.0) internal successors, (2438), 2 states have internal predecessors, (2438), 2 states have call successors, (720), 2 states have call predecessors, (720), 1 states have return successors, (720), 1 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:02:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 11796 transitions. [2024-11-28 04:02:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6034 [2024-11-28 04:02:58,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:58,717 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:58,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:02:58,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:02:58,919 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:58,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash -896064035, now seen corresponding path program 1 times [2024-11-28 04:02:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408346829] [2024-11-28 04:02:58,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:58,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:03:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408346829] [2024-11-28 04:03:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408346829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:19,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758443986] [2024-11-28 04:03:19,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:19,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:19,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:20,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:03:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:24,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 13166 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:03:24,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2157 proven. 0 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:03:25,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:25,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758443986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:25,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:25,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 04:03:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640057873] [2024-11-28 04:03:25,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:25,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:25,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:25,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:25,524 INFO L87 Difference]: Start difference. First operand 7118 states and 11796 transitions. Second operand has 6 states, 5 states have (on average 487.8) internal successors, (2439), 6 states have internal predecessors, (2439), 2 states have call successors, (720), 1 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:03:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:32,975 INFO L93 Difference]: Finished difference Result 7130 states and 11810 transitions. [2024-11-28 04:03:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:32,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 487.8) internal successors, (2439), 6 states have internal predecessors, (2439), 2 states have call successors, (720), 1 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6033 [2024-11-28 04:03:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:33,070 INFO L225 Difference]: With dead ends: 7130 [2024-11-28 04:03:33,070 INFO L226 Difference]: Without dead ends: 7120 [2024-11-28 04:03:33,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6038 GetRequests, 6032 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 04:03:33,076 INFO L435 NwaCegarLoop]: 11072 mSDtfsCounter, 1 mSDsluCounter, 42835 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53907 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:33,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53907 Invalid, 5070 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 5069 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-28 04:03:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2024-11-28 04:03:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 7120. [2024-11-28 04:03:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 6398 states have (on average 1.6189434198186934) internal successors, (10358), 6398 states have internal predecessors, (10358), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-28 04:03:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 11798 transitions. [2024-11-28 04:03:34,486 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 11798 transitions. Word has length 6033 [2024-11-28 04:03:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:34,531 INFO L471 AbstractCegarLoop]: Abstraction has 7120 states and 11798 transitions. [2024-11-28 04:03:34,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 487.8) internal successors, (2439), 6 states have internal predecessors, (2439), 2 states have call successors, (720), 1 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:03:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 11798 transitions. [2024-11-28 04:03:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6035 [2024-11-28 04:03:35,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:35,432 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:03:35,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:03:35,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 04:03:35,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:35,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash -776321517, now seen corresponding path program 1 times [2024-11-28 04:03:35,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693264677] [2024-11-28 04:03:35,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:35,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:03:53,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693264677] [2024-11-28 04:03:53,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693264677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609212601] [2024-11-28 04:03:53,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:53,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:53,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:53,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:53,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:03:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:57,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 13169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:03:57,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2876 proven. 0 refuted. 0 times theorem prover too weak. 1032484 trivial. 0 not checked. [2024-11-28 04:03:58,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:58,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609212601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:58,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:58,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:03:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527483173] [2024-11-28 04:03:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:58,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:58,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:58,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:58,617 INFO L87 Difference]: Start difference. First operand 7120 states and 11798 transitions. Second operand has 4 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:03:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:59,050 INFO L93 Difference]: Finished difference Result 7150 states and 11840 transitions. [2024-11-28 04:03:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6034 [2024-11-28 04:03:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:59,119 INFO L225 Difference]: With dead ends: 7150 [2024-11-28 04:03:59,119 INFO L226 Difference]: Without dead ends: 7129 [2024-11-28 04:03:59,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6039 GetRequests, 6033 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 04:03:59,128 INFO L435 NwaCegarLoop]: 11792 mSDtfsCounter, 9 mSDsluCounter, 23571 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35363 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:59,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35363 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2024-11-28 04:04:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 7129. [2024-11-28 04:04:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7129 states, 6407 states have (on average 1.6186982987357577) internal successors, (10371), 6407 states have internal predecessors, (10371), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-28 04:04:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7129 states to 7129 states and 11811 transitions. [2024-11-28 04:04:00,370 INFO L78 Accepts]: Start accepts. Automaton has 7129 states and 11811 transitions. Word has length 6034 [2024-11-28 04:04:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:00,410 INFO L471 AbstractCegarLoop]: Abstraction has 7129 states and 11811 transitions. [2024-11-28 04:04:00,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:04:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7129 states and 11811 transitions. [2024-11-28 04:04:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6035 [2024-11-28 04:04:01,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:01,216 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:01,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:04:01,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:01,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:01,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:01,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2088722669, now seen corresponding path program 1 times [2024-11-28 04:04:01,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:01,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426883728] [2024-11-28 04:04:01,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:01,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:04:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:18,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426883728] [2024-11-28 04:04:18,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426883728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:18,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257969291] [2024-11-28 04:04:18,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:18,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:18,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:18,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:18,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:04:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:22,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 13169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:04:22,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2876 proven. 0 refuted. 0 times theorem prover too weak. 1032484 trivial. 0 not checked. [2024-11-28 04:04:22,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257969291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:22,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:04:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589253655] [2024-11-28 04:04:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:22,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:22,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:22,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:22,992 INFO L87 Difference]: Start difference. First operand 7129 states and 11811 transitions. Second operand has 3 states, 3 states have (on average 813.3333333333334) internal successors, (2440), 3 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:04:23,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:23,292 INFO L93 Difference]: Finished difference Result 7147 states and 11833 transitions. [2024-11-28 04:04:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 813.3333333333334) internal successors, (2440), 3 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6034 [2024-11-28 04:04:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:23,488 INFO L225 Difference]: With dead ends: 7147 [2024-11-28 04:04:23,488 INFO L226 Difference]: Without dead ends: 7130 [2024-11-28 04:04:23,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6039 GetRequests, 6034 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 04:04:23,493 INFO L435 NwaCegarLoop]: 11795 mSDtfsCounter, 0 mSDsluCounter, 11786 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23581 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 04:04:23,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23581 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2024-11-28 04:04:24,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 7130. [2024-11-28 04:04:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 6408 states have (on average 1.618445692883895) internal successors, (10371), 6408 states have internal predecessors, (10371), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-28 04:04:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 11811 transitions. [2024-11-28 04:04:24,231 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 11811 transitions. Word has length 6034 [2024-11-28 04:04:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:24,248 INFO L471 AbstractCegarLoop]: Abstraction has 7130 states and 11811 transitions. [2024-11-28 04:04:24,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 813.3333333333334) internal successors, (2440), 3 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:04:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 11811 transitions. [2024-11-28 04:04:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6036 [2024-11-28 04:04:24,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:24,682 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:24,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:04:24,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:24,884 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:24,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash 361255991, now seen corresponding path program 1 times [2024-11-28 04:04:24,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:24,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191714641] [2024-11-28 04:04:24,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:24,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:04:40,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191714641] [2024-11-28 04:04:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191714641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:40,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722253948] [2024-11-28 04:04:40,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:40,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:40,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:40,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:40,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:04:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:44,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 13172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:04:44,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2876 proven. 0 refuted. 0 times theorem prover too weak. 1032484 trivial. 0 not checked. [2024-11-28 04:04:57,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722253948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:57,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:04:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183032954] [2024-11-28 04:04:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:57,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:57,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:57,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:57,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:57,622 INFO L87 Difference]: Start difference. First operand 7130 states and 11811 transitions. Second operand has 3 states, 3 states have (on average 813.6666666666666) internal successors, (2441), 3 states have internal predecessors, (2441), 3 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 3 states have call predecessors, (720), 3 states have call successors, (720) [2024-11-28 04:04:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:58,175 INFO L93 Difference]: Finished difference Result 19701 states and 32633 transitions. [2024-11-28 04:04:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:58,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 813.6666666666666) internal successors, (2441), 3 states have internal predecessors, (2441), 3 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 3 states have call predecessors, (720), 3 states have call successors, (720) Word has length 6035 [2024-11-28 04:04:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:58,257 INFO L225 Difference]: With dead ends: 19701 [2024-11-28 04:04:58,258 INFO L226 Difference]: Without dead ends: 13407 [2024-11-28 04:04:58,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6040 GetRequests, 6035 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:58,282 INFO L435 NwaCegarLoop]: 17304 mSDtfsCounter, 7909 mSDsluCounter, 11848 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7909 SdHoareTripleChecker+Valid, 29152 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:58,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7909 Valid, 29152 Invalid, 56 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:04:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13407 states. [2024-11-28 04:04:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13407 to 13407. [2024-11-28 04:04:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13407 states, 12506 states have (on average 1.6323364784903247) internal successors, (20414), 12506 states have internal predecessors, (20414), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:04:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13407 states to 13407 states and 22212 transitions. [2024-11-28 04:04:59,926 INFO L78 Accepts]: Start accepts. Automaton has 13407 states and 22212 transitions. Word has length 6035 [2024-11-28 04:04:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:59,945 INFO L471 AbstractCegarLoop]: Abstraction has 13407 states and 22212 transitions. [2024-11-28 04:04:59,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 813.6666666666666) internal successors, (2441), 3 states have internal predecessors, (2441), 3 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 3 states have call predecessors, (720), 3 states have call successors, (720) [2024-11-28 04:04:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 13407 states and 22212 transitions. [2024-11-28 04:05:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6036 [2024-11-28 04:05:00,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:00,662 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:00,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:00,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:00,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:05:00,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 437450819, now seen corresponding path program 1 times [2024-11-28 04:05:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:00,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070053088] [2024-11-28 04:05:00,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:05:18,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:18,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070053088] [2024-11-28 04:05:18,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070053088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:18,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922337739] [2024-11-28 04:05:18,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:18,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:18,304 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:18,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:05:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:23,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 13172 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:05:23,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2876 proven. 0 refuted. 0 times theorem prover too weak. 1032484 trivial. 0 not checked. [2024-11-28 04:05:23,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:05:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922337739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:23,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:05:23,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:05:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773679899] [2024-11-28 04:05:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:23,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:05:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:23,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:05:23,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:05:23,520 INFO L87 Difference]: Start difference. First operand 13407 states and 22212 transitions. Second operand has 4 states, 4 states have (on average 610.25) internal successors, (2441), 4 states have internal predecessors, (2441), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:05:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:24,377 INFO L93 Difference]: Finished difference Result 13475 states and 22313 transitions. [2024-11-28 04:05:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:05:24,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 610.25) internal successors, (2441), 4 states have internal predecessors, (2441), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6035 [2024-11-28 04:05:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:24,539 INFO L225 Difference]: With dead ends: 13475 [2024-11-28 04:05:24,542 INFO L226 Difference]: Without dead ends: 13424 [2024-11-28 04:05:24,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6040 GetRequests, 6034 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 04:05:24,562 INFO L435 NwaCegarLoop]: 11792 mSDtfsCounter, 9 mSDsluCounter, 23571 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35363 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:24,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35363 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:05:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13424 states. [2024-11-28 04:05:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13424 to 13424. [2024-11-28 04:05:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 12523 states have (on average 1.6321169048949933) internal successors, (20439), 12523 states have internal predecessors, (20439), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:05:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 22237 transitions. [2024-11-28 04:05:26,208 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 22237 transitions. Word has length 6035 [2024-11-28 04:05:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:26,217 INFO L471 AbstractCegarLoop]: Abstraction has 13424 states and 22237 transitions. [2024-11-28 04:05:26,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 610.25) internal successors, (2441), 4 states have internal predecessors, (2441), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:05:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 22237 transitions. [2024-11-28 04:05:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6036 [2024-11-28 04:05:26,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:26,810 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:26,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:27,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:05:27,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:05:27,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1421547037, now seen corresponding path program 1 times [2024-11-28 04:05:27,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515457414] [2024-11-28 04:05:27,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:05:41,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:41,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515457414] [2024-11-28 04:05:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515457414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878708700] [2024-11-28 04:05:41,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:41,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:41,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:41,214 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:41,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:05:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:45,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 13172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:05:45,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2876 proven. 0 refuted. 0 times theorem prover too weak. 1032484 trivial. 0 not checked. [2024-11-28 04:05:45,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:05:45,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878708700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:45,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:05:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:05:45,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789663975] [2024-11-28 04:05:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:45,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:05:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:45,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:05:45,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:05:45,639 INFO L87 Difference]: Start difference. First operand 13424 states and 22237 transitions. Second operand has 3 states, 3 states have (on average 813.6666666666666) internal successors, (2441), 3 states have internal predecessors, (2441), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:05:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:45,883 INFO L93 Difference]: Finished difference Result 13455 states and 22278 transitions. [2024-11-28 04:05:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:05:45,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 813.6666666666666) internal successors, (2441), 3 states have internal predecessors, (2441), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6035 [2024-11-28 04:05:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:45,941 INFO L225 Difference]: With dead ends: 13455 [2024-11-28 04:05:45,942 INFO L226 Difference]: Without dead ends: 13417 [2024-11-28 04:05:45,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6040 GetRequests, 6035 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 04:05:45,950 INFO L435 NwaCegarLoop]: 11795 mSDtfsCounter, 0 mSDsluCounter, 11786 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23581 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 04:05:45,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23581 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:05:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13417 states. [2024-11-28 04:05:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13417 to 13417. [2024-11-28 04:05:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13417 states, 12516 states have (on average 1.6319111537232343) internal successors, (20425), 12516 states have internal predecessors, (20425), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:05:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13417 states to 13417 states and 22223 transitions. [2024-11-28 04:05:47,262 INFO L78 Accepts]: Start accepts. Automaton has 13417 states and 22223 transitions. Word has length 6035 [2024-11-28 04:05:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:47,282 INFO L471 AbstractCegarLoop]: Abstraction has 13417 states and 22223 transitions. [2024-11-28 04:05:47,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 813.6666666666666) internal successors, (2441), 3 states have internal predecessors, (2441), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:05:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13417 states and 22223 transitions. [2024-11-28 04:05:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6037 [2024-11-28 04:05:48,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:48,173 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:48,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:05:48,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:05:48,378 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:05:48,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2062987419, now seen corresponding path program 1 times [2024-11-28 04:05:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252324310] [2024-11-28 04:05:48,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:48,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:06:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252324310] [2024-11-28 04:06:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252324310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645234681] [2024-11-28 04:06:05,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:05,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:05,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:06:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:09,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 13175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:06:09,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 5030 proven. 0 refuted. 0 times theorem prover too weak. 1030330 trivial. 0 not checked. [2024-11-28 04:06:09,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:06:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645234681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:06:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 04:06:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717370722] [2024-11-28 04:06:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:09,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:06:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:09,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:06:09,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:06:09,688 INFO L87 Difference]: Start difference. First operand 13417 states and 22223 transitions. Second operand has 6 states, 5 states have (on average 489.0) internal successors, (2445), 6 states have internal predecessors, (2445), 3 states have call successors, (720), 2 states have call predecessors, (720), 3 states have return successors, (720), 2 states have call predecessors, (720), 3 states have call successors, (720) [2024-11-28 04:06:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:15,422 INFO L93 Difference]: Finished difference Result 13513 states and 22365 transitions. [2024-11-28 04:06:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:06:15,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 489.0) internal successors, (2445), 6 states have internal predecessors, (2445), 3 states have call successors, (720), 2 states have call predecessors, (720), 3 states have return successors, (720), 2 states have call predecessors, (720), 3 states have call successors, (720) Word has length 6036 [2024-11-28 04:06:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:15,530 INFO L225 Difference]: With dead ends: 13513 [2024-11-28 04:06:15,530 INFO L226 Difference]: Without dead ends: 13421 [2024-11-28 04:06:15,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6041 GetRequests, 6035 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 04:06:15,535 INFO L435 NwaCegarLoop]: 11072 mSDtfsCounter, 1 mSDsluCounter, 42835 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53907 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:15,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53907 Invalid, 5070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5069 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 04:06:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2024-11-28 04:06:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 13421. [2024-11-28 04:06:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 12520 states have (on average 1.6317092651757188) internal successors, (20429), 12520 states have internal predecessors, (20429), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:06:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 22227 transitions. [2024-11-28 04:06:16,574 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 22227 transitions. Word has length 6036 [2024-11-28 04:06:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:16,581 INFO L471 AbstractCegarLoop]: Abstraction has 13421 states and 22227 transitions. [2024-11-28 04:06:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 489.0) internal successors, (2445), 6 states have internal predecessors, (2445), 3 states have call successors, (720), 2 states have call predecessors, (720), 3 states have return successors, (720), 2 states have call predecessors, (720), 3 states have call successors, (720) [2024-11-28 04:06:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 22227 transitions. [2024-11-28 04:06:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6038 [2024-11-28 04:06:16,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:16,999 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:17,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:06:17,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:06:17,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:17,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1794187429, now seen corresponding path program 1 times [2024-11-28 04:06:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694097991] [2024-11-28 04:06:17,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:17,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:06:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:31,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694097991] [2024-11-28 04:06:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694097991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776215063] [2024-11-28 04:06:31,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:31,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:31,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:31,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:31,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:06:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:35,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 13178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:06:35,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 5744 proven. 0 refuted. 0 times theorem prover too weak. 1029616 trivial. 0 not checked. [2024-11-28 04:06:36,029 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:06:36,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776215063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:36,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:06:36,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:06:36,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310055748] [2024-11-28 04:06:36,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:36,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:06:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:36,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:06:36,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:06:36,039 INFO L87 Difference]: Start difference. First operand 13421 states and 22227 transitions. Second operand has 4 states, 4 states have (on average 610.75) internal successors, (2443), 4 states have internal predecessors, (2443), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:06:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:36,260 INFO L93 Difference]: Finished difference Result 13553 states and 22425 transitions. [2024-11-28 04:06:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:06:36,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 610.75) internal successors, (2443), 4 states have internal predecessors, (2443), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6037 [2024-11-28 04:06:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:36,302 INFO L225 Difference]: With dead ends: 13553 [2024-11-28 04:06:36,302 INFO L226 Difference]: Without dead ends: 13439 [2024-11-28 04:06:36,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6042 GetRequests, 6036 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 04:06:36,310 INFO L435 NwaCegarLoop]: 11792 mSDtfsCounter, 9 mSDsluCounter, 23571 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35363 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:36,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35363 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:06:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13439 states. [2024-11-28 04:06:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13439 to 13439. [2024-11-28 04:06:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13439 states, 12538 states have (on average 1.631440421119796) internal successors, (20455), 12538 states have internal predecessors, (20455), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:06:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 22253 transitions. [2024-11-28 04:06:37,573 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 22253 transitions. Word has length 6037 [2024-11-28 04:06:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:37,579 INFO L471 AbstractCegarLoop]: Abstraction has 13439 states and 22253 transitions. [2024-11-28 04:06:37,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 610.75) internal successors, (2443), 4 states have internal predecessors, (2443), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:06:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 22253 transitions. [2024-11-28 04:06:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6038 [2024-11-28 04:06:38,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:38,258 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:38,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:06:38,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:06:38,460 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:38,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1371542081, now seen corresponding path program 1 times [2024-11-28 04:06:38,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162229251] [2024-11-28 04:06:38,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:38,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:06:52,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162229251] [2024-11-28 04:06:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162229251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224939320] [2024-11-28 04:06:52,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:52,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:52,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:52,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:52,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:06:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:56,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 13178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:06:56,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 5744 proven. 0 refuted. 0 times theorem prover too weak. 1029616 trivial. 0 not checked. [2024-11-28 04:06:56,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:06:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224939320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:56,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:06:56,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:06:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493379407] [2024-11-28 04:06:56,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:56,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:06:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:56,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:06:56,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:06:56,763 INFO L87 Difference]: Start difference. First operand 13439 states and 22253 transitions. Second operand has 3 states, 3 states have (on average 814.3333333333334) internal successors, (2443), 3 states have internal predecessors, (2443), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:06:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:56,916 INFO L93 Difference]: Finished difference Result 13547 states and 22411 transitions. [2024-11-28 04:06:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:06:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 814.3333333333334) internal successors, (2443), 3 states have internal predecessors, (2443), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6037 [2024-11-28 04:06:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:56,951 INFO L225 Difference]: With dead ends: 13547 [2024-11-28 04:06:56,951 INFO L226 Difference]: Without dead ends: 13441 [2024-11-28 04:06:56,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6042 GetRequests, 6037 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 04:06:56,960 INFO L435 NwaCegarLoop]: 11795 mSDtfsCounter, 0 mSDsluCounter, 11786 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23581 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 04:06:56,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23581 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:06:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2024-11-28 04:06:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 13441. [2024-11-28 04:06:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13441 states, 12540 states have (on average 1.6311802232854864) internal successors, (20455), 12540 states have internal predecessors, (20455), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:06:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13441 states to 13441 states and 22253 transitions. [2024-11-28 04:06:58,138 INFO L78 Accepts]: Start accepts. Automaton has 13441 states and 22253 transitions. Word has length 6037 [2024-11-28 04:06:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:58,143 INFO L471 AbstractCegarLoop]: Abstraction has 13441 states and 22253 transitions. [2024-11-28 04:06:58,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 814.3333333333334) internal successors, (2443), 3 states have internal predecessors, (2443), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:06:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 13441 states and 22253 transitions. [2024-11-28 04:06:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6039 [2024-11-28 04:06:58,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:58,559 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:58,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:06:58,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:06:58,760 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:58,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1031003957, now seen corresponding path program 1 times [2024-11-28 04:06:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932256568] [2024-11-28 04:06:58,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:07:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932256568] [2024-11-28 04:07:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932256568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536286745] [2024-11-28 04:07:14,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:14,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:14,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:14,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:14,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:07:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:17,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 13181 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:07:17,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 5744 proven. 0 refuted. 0 times theorem prover too weak. 1029616 trivial. 0 not checked. [2024-11-28 04:07:18,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536286745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:18,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:18,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:07:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219956673] [2024-11-28 04:07:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:18,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:18,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:18,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:18,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:07:18,471 INFO L87 Difference]: Start difference. First operand 13441 states and 22253 transitions. Second operand has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:07:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:18,655 INFO L93 Difference]: Finished difference Result 13611 states and 22509 transitions. [2024-11-28 04:07:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6038 [2024-11-28 04:07:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:18,684 INFO L225 Difference]: With dead ends: 13611 [2024-11-28 04:07:18,685 INFO L226 Difference]: Without dead ends: 13461 [2024-11-28 04:07:18,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6043 GetRequests, 6037 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 04:07:18,691 INFO L435 NwaCegarLoop]: 11792 mSDtfsCounter, 9 mSDsluCounter, 23571 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35363 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 04:07:18,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35363 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13461 states. [2024-11-28 04:07:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13461 to 13461. [2024-11-28 04:07:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13461 states, 12560 states have (on average 1.6309713375796178) internal successors, (20485), 12560 states have internal predecessors, (20485), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:07:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13461 states to 13461 states and 22283 transitions. [2024-11-28 04:07:19,536 INFO L78 Accepts]: Start accepts. Automaton has 13461 states and 22283 transitions. Word has length 6038 [2024-11-28 04:07:19,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:19,541 INFO L471 AbstractCegarLoop]: Abstraction has 13461 states and 22283 transitions. [2024-11-28 04:07:19,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-28 04:07:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13461 states and 22283 transitions. [2024-11-28 04:07:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6039 [2024-11-28 04:07:19,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:19,845 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:19,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:07:20,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:20,046 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:20,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1454180671, now seen corresponding path program 1 times [2024-11-28 04:07:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:20,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4901201] [2024-11-28 04:07:20,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-28 04:07:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:32,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4901201] [2024-11-28 04:07:32,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4901201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:32,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84781918] [2024-11-28 04:07:32,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:32,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:32,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:32,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:32,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:07:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:36,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 13181 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:07:36,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 7895 proven. 0 refuted. 0 times theorem prover too weak. 1027465 trivial. 0 not checked. [2024-11-28 04:07:36,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84781918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:36,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:36,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 04:07:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679747674] [2024-11-28 04:07:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:36,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:36,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:36,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:07:36,952 INFO L87 Difference]: Start difference. First operand 13461 states and 22283 transitions. Second operand has 6 states, 5 states have (on average 489.4) internal successors, (2447), 6 states have internal predecessors, (2447), 3 states have call successors, (720), 2 states have call predecessors, (720), 3 states have return successors, (720), 2 states have call predecessors, (720), 3 states have call successors, (720) [2024-11-28 04:07:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:41,496 INFO L93 Difference]: Finished difference Result 13671 states and 22601 transitions. [2024-11-28 04:07:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:41,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 489.4) internal successors, (2447), 6 states have internal predecessors, (2447), 3 states have call successors, (720), 2 states have call predecessors, (720), 3 states have return successors, (720), 2 states have call predecessors, (720), 3 states have call successors, (720) Word has length 6038 [2024-11-28 04:07:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:41,521 INFO L225 Difference]: With dead ends: 13671 [2024-11-28 04:07:41,521 INFO L226 Difference]: Without dead ends: 13465 [2024-11-28 04:07:41,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6043 GetRequests, 6037 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 04:07:41,526 INFO L435 NwaCegarLoop]: 11072 mSDtfsCounter, 1 mSDsluCounter, 42835 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53907 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:41,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53907 Invalid, 5070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5069 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:07:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13465 states. [2024-11-28 04:07:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13465 to 13465. [2024-11-28 04:07:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13465 states, 12564 states have (on average 1.6307704552690225) internal successors, (20489), 12564 states have internal predecessors, (20489), 899 states have call successors, (899), 1 states have call predecessors, (899), 1 states have return successors, (899), 899 states have call predecessors, (899), 899 states have call successors, (899) [2024-11-28 04:07:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13465 states to 13465 states and 22287 transitions. [2024-11-28 04:07:42,105 INFO L78 Accepts]: Start accepts. Automaton has 13465 states and 22287 transitions. Word has length 6038 [2024-11-28 04:07:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:42,110 INFO L471 AbstractCegarLoop]: Abstraction has 13465 states and 22287 transitions. [2024-11-28 04:07:42,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 489.4) internal successors, (2447), 6 states have internal predecessors, (2447), 3 states have call successors, (720), 2 states have call predecessors, (720), 3 states have return successors, (720), 2 states have call predecessors, (720), 3 states have call successors, (720) [2024-11-28 04:07:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13465 states and 22287 transitions. [2024-11-28 04:07:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6040 [2024-11-28 04:07:42,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:42,395 INFO L218 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:42,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:07:42,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6361033-3582-4036-99ed-60e8c6cb428b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:42,600 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:42,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash -423117901, now seen corresponding path program 1 times [2024-11-28 04:07:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574547900] [2024-11-28 04:07:42,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat