./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label05.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_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/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_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/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_96cc3fb3-d730-4d55-880e-096158a1b112/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 6998e746c84ec80cbdf636f88f142c2942fd045c8cffd9bc8881e887e07cd119 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:26:44,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:26:44,442 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:26:44,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:26:44,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:26:44,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:26:44,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:26:44,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:26:44,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:26:44,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:26:44,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:26:44,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:26:44,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:26:44,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:26:44,474 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:26:44,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:26:44,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:26:44,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:26:44,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:26:44,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:44,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:26:44,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:26:44,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:26:44,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:26:44,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:44,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:26:44,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:26:44,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:26:44,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:26:44,480 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_96cc3fb3-d730-4d55-880e-096158a1b112/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 -> 6998e746c84ec80cbdf636f88f142c2942fd045c8cffd9bc8881e887e07cd119 [2024-11-28 02:26:44,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:26:44,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:26:44,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:26:44,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:26:44,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:26:44,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem11_label05.c [2024-11-28 02:26:47,794 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/data/50ba6ab1d/411428f9cf5545d0a4708827bec645c9/FLAG44cb423b0 [2024-11-28 02:26:48,219 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:26:48,219 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/sv-benchmarks/c/eca-rers2012/Problem11_label05.c [2024-11-28 02:26:48,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/data/50ba6ab1d/411428f9cf5545d0a4708827bec645c9/FLAG44cb423b0 [2024-11-28 02:26:48,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/data/50ba6ab1d/411428f9cf5545d0a4708827bec645c9 [2024-11-28 02:26:48,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:26:48,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:26:48,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:48,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:26:48,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:26:48,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:48" (1/1) ... [2024-11-28 02:26:48,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488d5790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:48, skipping insertion in model container [2024-11-28 02:26:48,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:48" (1/1) ... [2024-11-28 02:26:48,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:26:48,769 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_96cc3fb3-d730-4d55-880e-096158a1b112/sv-benchmarks/c/eca-rers2012/Problem11_label05.c[9225,9238] [2024-11-28 02:26:49,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:49,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:26:49,099 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_96cc3fb3-d730-4d55-880e-096158a1b112/sv-benchmarks/c/eca-rers2012/Problem11_label05.c[9225,9238] [2024-11-28 02:26:49,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:49,308 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:26:49,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49 WrapperNode [2024-11-28 02:26:49,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:49,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:49,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:26:49,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:26:49,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,454 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-28 02:26:49,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:49,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:26:49,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:26:49,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:26:49,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,573 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:26:49,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,621 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:26:49,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:26:49,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:26:49,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:26:49,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (1/1) ... [2024-11-28 02:26:49,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:49,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:26:49,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:26:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:26:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:26:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:26:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:26:49,831 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:26:49,833 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:26:52,238 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-28 02:26:52,238 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:26:52,268 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:26:52,269 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:26:52,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:52 BoogieIcfgContainer [2024-11-28 02:26:52,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:26:52,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:26:52,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:26:52,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:26:52,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:26:48" (1/3) ... [2024-11-28 02:26:52,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76172a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:52, skipping insertion in model container [2024-11-28 02:26:52,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:49" (2/3) ... [2024-11-28 02:26:52,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76172a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:52, skipping insertion in model container [2024-11-28 02:26:52,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:52" (3/3) ... [2024-11-28 02:26:52,285 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2024-11-28 02:26:52,304 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:26:52,306 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem11_label05.c that has 1 procedures, 283 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:26:52,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:52,412 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;@26086115, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:52,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:26:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:26:52,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:52,427 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:52,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:52,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times [2024-11-28 02:26:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:52,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218867032] [2024-11-28 02:26:52,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:53,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218867032] [2024-11-28 02:26:53,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218867032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:53,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:53,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554684328] [2024-11-28 02:26:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:53,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:53,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:53,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:53,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:53,109 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:54,800 INFO L93 Difference]: Finished difference Result 761 states and 1345 transitions. [2024-11-28 02:26:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:54,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-28 02:26:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:54,819 INFO L225 Difference]: With dead ends: 761 [2024-11-28 02:26:54,819 INFO L226 Difference]: Without dead ends: 413 [2024-11-28 02:26:54,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:54,834 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 164 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:54,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 222 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:26:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-28 02:26:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2024-11-28 02:26:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.453883495145631) internal successors, (599), 412 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 599 transitions. [2024-11-28 02:26:54,955 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 599 transitions. Word has length 64 [2024-11-28 02:26:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:54,956 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 599 transitions. [2024-11-28 02:26:54,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 599 transitions. [2024-11-28 02:26:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 02:26:54,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:54,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:54,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:26:54,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:54,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash -355691958, now seen corresponding path program 1 times [2024-11-28 02:26:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682170619] [2024-11-28 02:26:54,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682170619] [2024-11-28 02:26:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682170619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:55,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565259838] [2024-11-28 02:26:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:55,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:55,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:55,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:55,350 INFO L87 Difference]: Start difference. First operand 413 states and 599 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:56,401 INFO L93 Difference]: Finished difference Result 1211 states and 1763 transitions. [2024-11-28 02:26:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-11-28 02:26:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:56,406 INFO L225 Difference]: With dead ends: 1211 [2024-11-28 02:26:56,406 INFO L226 Difference]: Without dead ends: 800 [2024-11-28 02:26:56,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:56,408 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:56,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 118 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:26:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-28 02:26:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2024-11-28 02:26:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.3756345177664975) internal successors, (1084), 788 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1084 transitions. [2024-11-28 02:26:56,441 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1084 transitions. Word has length 132 [2024-11-28 02:26:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:56,441 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1084 transitions. [2024-11-28 02:26:56,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1084 transitions. [2024-11-28 02:26:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 02:26:56,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:56,444 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:56,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:26:56,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1592760116, now seen corresponding path program 1 times [2024-11-28 02:26:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187930912] [2024-11-28 02:26:56,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187930912] [2024-11-28 02:26:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187930912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684495975] [2024-11-28 02:26:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:56,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:56,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:56,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:56,987 INFO L87 Difference]: Start difference. First operand 789 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:57,989 INFO L93 Difference]: Finished difference Result 1945 states and 2614 transitions. [2024-11-28 02:26:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:57,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-28 02:26:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:57,995 INFO L225 Difference]: With dead ends: 1945 [2024-11-28 02:26:57,995 INFO L226 Difference]: Without dead ends: 1158 [2024-11-28 02:26:57,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:57,999 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:57,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:26:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-28 02:26:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1157. [2024-11-28 02:26:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.2716262975778547) internal successors, (1470), 1156 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1470 transitions. [2024-11-28 02:26:58,040 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1470 transitions. Word has length 133 [2024-11-28 02:26:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:58,040 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1470 transitions. [2024-11-28 02:26:58,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1470 transitions. [2024-11-28 02:26:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-28 02:26:58,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:58,045 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:58,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:26:58,045 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:58,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 491130087, now seen corresponding path program 1 times [2024-11-28 02:26:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123916057] [2024-11-28 02:26:58,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123916057] [2024-11-28 02:26:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123916057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:58,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:26:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253422191] [2024-11-28 02:26:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:58,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:58,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:58,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:58,479 INFO L87 Difference]: Start difference. First operand 1157 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:59,510 INFO L93 Difference]: Finished difference Result 2519 states and 3352 transitions. [2024-11-28 02:26:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-28 02:26:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:59,517 INFO L225 Difference]: With dead ends: 2519 [2024-11-28 02:26:59,517 INFO L226 Difference]: Without dead ends: 1548 [2024-11-28 02:26:59,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:59,520 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 171 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:59,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:26:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2024-11-28 02:26:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1545. [2024-11-28 02:26:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 1.294041450777202) internal successors, (1998), 1544 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1998 transitions. [2024-11-28 02:26:59,557 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1998 transitions. Word has length 191 [2024-11-28 02:26:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:59,558 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 1998 transitions. [2024-11-28 02:26:59,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1998 transitions. [2024-11-28 02:26:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-28 02:26:59,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:59,563 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:59,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:26:59,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:59,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1941392826, now seen corresponding path program 1 times [2024-11-28 02:26:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:59,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585199079] [2024-11-28 02:26:59,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:59,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585199079] [2024-11-28 02:26:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585199079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:59,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:59,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:26:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047977233] [2024-11-28 02:26:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:59,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:59,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:59,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:59,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:59,966 INFO L87 Difference]: Start difference. First operand 1545 states and 1998 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:01,033 INFO L93 Difference]: Finished difference Result 3656 states and 4826 transitions. [2024-11-28 02:27:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:01,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-28 02:27:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:01,042 INFO L225 Difference]: With dead ends: 3656 [2024-11-28 02:27:01,042 INFO L226 Difference]: Without dead ends: 2297 [2024-11-28 02:27:01,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:01,046 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 136 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:01,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 340 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:27:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2024-11-28 02:27:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2100. [2024-11-28 02:27:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 1.2706050500238208) internal successors, (2667), 2099 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2667 transitions. [2024-11-28 02:27:01,101 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2667 transitions. Word has length 244 [2024-11-28 02:27:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:01,102 INFO L471 AbstractCegarLoop]: Abstraction has 2100 states and 2667 transitions. [2024-11-28 02:27:01,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2667 transitions. [2024-11-28 02:27:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-28 02:27:01,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:01,107 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:01,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:27:01,108 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:01,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 790120528, now seen corresponding path program 1 times [2024-11-28 02:27:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824817566] [2024-11-28 02:27:01,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-28 02:27:01,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:01,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824817566] [2024-11-28 02:27:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824817566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:01,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:01,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:01,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309187587] [2024-11-28 02:27:01,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:01,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:01,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:01,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:01,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:01,506 INFO L87 Difference]: Start difference. First operand 2100 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:02,500 INFO L93 Difference]: Finished difference Result 4765 states and 6075 transitions. [2024-11-28 02:27:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:02,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2024-11-28 02:27:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:02,511 INFO L225 Difference]: With dead ends: 4765 [2024-11-28 02:27:02,511 INFO L226 Difference]: Without dead ends: 2667 [2024-11-28 02:27:02,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:02,518 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 138 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:02,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 345 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:27:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2024-11-28 02:27:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2652. [2024-11-28 02:27:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2651 states have (on average 1.2572614107883817) internal successors, (3333), 2651 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3333 transitions. [2024-11-28 02:27:02,589 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3333 transitions. Word has length 245 [2024-11-28 02:27:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:02,590 INFO L471 AbstractCegarLoop]: Abstraction has 2652 states and 3333 transitions. [2024-11-28 02:27:02,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3333 transitions. [2024-11-28 02:27:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 02:27:02,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:02,595 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:02,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:27:02,596 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:02,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1579189985, now seen corresponding path program 1 times [2024-11-28 02:27:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:02,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626021914] [2024-11-28 02:27:02,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:02,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 02:27:02,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:02,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626021914] [2024-11-28 02:27:02,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626021914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:02,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:02,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:02,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6657864] [2024-11-28 02:27:02,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:02,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:02,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:02,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:02,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:02,970 INFO L87 Difference]: Start difference. First operand 2652 states and 3333 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:04,115 INFO L93 Difference]: Finished difference Result 6047 states and 7676 transitions. [2024-11-28 02:27:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2024-11-28 02:27:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:04,127 INFO L225 Difference]: With dead ends: 6047 [2024-11-28 02:27:04,128 INFO L226 Difference]: Without dead ends: 3397 [2024-11-28 02:27:04,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:04,132 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 133 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:04,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 379 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:27:04,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2024-11-28 02:27:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3204. [2024-11-28 02:27:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 3203 states have (on average 1.2466437714642522) internal successors, (3993), 3203 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 3993 transitions. [2024-11-28 02:27:04,214 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 3993 transitions. Word has length 246 [2024-11-28 02:27:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:04,215 INFO L471 AbstractCegarLoop]: Abstraction has 3204 states and 3993 transitions. [2024-11-28 02:27:04,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 3993 transitions. [2024-11-28 02:27:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-28 02:27:04,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:04,221 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:04,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:27:04,222 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:04,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1141889263, now seen corresponding path program 1 times [2024-11-28 02:27:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216407458] [2024-11-28 02:27:04,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:04,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216407458] [2024-11-28 02:27:04,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216407458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:04,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:04,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:27:04,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360229084] [2024-11-28 02:27:04,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:04,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:27:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:04,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:27:04,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:04,830 INFO L87 Difference]: Start difference. First operand 3204 states and 3993 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:06,680 INFO L93 Difference]: Finished difference Result 11048 states and 13849 transitions. [2024-11-28 02:27:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:27:06,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-11-28 02:27:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:06,707 INFO L225 Difference]: With dead ends: 11048 [2024-11-28 02:27:06,707 INFO L226 Difference]: Without dead ends: 7846 [2024-11-28 02:27:06,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:06,713 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 270 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:06,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 206 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:27:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7846 states. [2024-11-28 02:27:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7846 to 7473. [2024-11-28 02:27:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7473 states, 7472 states have (on average 1.2011509635974305) internal successors, (8975), 7472 states have internal predecessors, (8975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7473 states to 7473 states and 8975 transitions. [2024-11-28 02:27:06,938 INFO L78 Accepts]: Start accepts. Automaton has 7473 states and 8975 transitions. Word has length 266 [2024-11-28 02:27:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:06,940 INFO L471 AbstractCegarLoop]: Abstraction has 7473 states and 8975 transitions. [2024-11-28 02:27:06,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7473 states and 8975 transitions. [2024-11-28 02:27:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 02:27:06,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:06,948 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:06,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:27:06,950 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:06,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash -33415155, now seen corresponding path program 1 times [2024-11-28 02:27:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003407570] [2024-11-28 02:27:06,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 02:27:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:07,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003407570] [2024-11-28 02:27:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003407570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:27:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141022230] [2024-11-28 02:27:07,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:07,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:07,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:07,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:07,187 INFO L87 Difference]: Start difference. First operand 7473 states and 8975 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:08,142 INFO L93 Difference]: Finished difference Result 14540 states and 17486 transitions. [2024-11-28 02:27:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:08,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-28 02:27:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:08,167 INFO L225 Difference]: With dead ends: 14540 [2024-11-28 02:27:08,167 INFO L226 Difference]: Without dead ends: 7069 [2024-11-28 02:27:08,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:08,179 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:08,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 152 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:27:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7069 states. [2024-11-28 02:27:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7069 to 7068. [2024-11-28 02:27:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7067 states have (on average 1.144757322767794) internal successors, (8090), 7067 states have internal predecessors, (8090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 8090 transitions. [2024-11-28 02:27:08,324 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 8090 transitions. Word has length 267 [2024-11-28 02:27:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:08,325 INFO L471 AbstractCegarLoop]: Abstraction has 7068 states and 8090 transitions. [2024-11-28 02:27:08,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 8090 transitions. [2024-11-28 02:27:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-28 02:27:08,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:08,331 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:08,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:27:08,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:08,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash 726597686, now seen corresponding path program 1 times [2024-11-28 02:27:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:08,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191663666] [2024-11-28 02:27:08,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:08,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191663666] [2024-11-28 02:27:08,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191663666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:08,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:27:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960410058] [2024-11-28 02:27:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:08,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:27:08,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:08,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:27:08,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:08,839 INFO L87 Difference]: Start difference. First operand 7068 states and 8090 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:10,598 INFO L93 Difference]: Finished difference Result 18561 states and 21349 transitions. [2024-11-28 02:27:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:27:10,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2024-11-28 02:27:10,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:10,625 INFO L225 Difference]: With dead ends: 18561 [2024-11-28 02:27:10,625 INFO L226 Difference]: Without dead ends: 11495 [2024-11-28 02:27:10,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:10,633 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 294 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:10,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 106 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:27:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11495 states. [2024-11-28 02:27:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11495 to 10199. [2024-11-28 02:27:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10199 states, 10198 states have (on average 1.1447342616199254) internal successors, (11674), 10198 states have internal predecessors, (11674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 11674 transitions. [2024-11-28 02:27:10,851 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 11674 transitions. Word has length 276 [2024-11-28 02:27:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:10,852 INFO L471 AbstractCegarLoop]: Abstraction has 10199 states and 11674 transitions. [2024-11-28 02:27:10,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 11674 transitions. [2024-11-28 02:27:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 02:27:10,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:10,860 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:10,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:27:10,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:10,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1197973930, now seen corresponding path program 1 times [2024-11-28 02:27:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884731681] [2024-11-28 02:27:10,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 185 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:11,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884731681] [2024-11-28 02:27:11,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884731681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361647302] [2024-11-28 02:27:11,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:11,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:11,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:11,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:11,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:27:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:12,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:27:12,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 74 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:13,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 74 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361647302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:15,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:27:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916894726] [2024-11-28 02:27:15,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:15,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:27:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:15,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:27:15,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:27:15,530 INFO L87 Difference]: Start difference. First operand 10199 states and 11674 transitions. Second operand has 11 states, 11 states have (on average 45.81818181818182) internal successors, (504), 10 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:20,526 INFO L93 Difference]: Finished difference Result 23200 states and 26569 transitions. [2024-11-28 02:27:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:27:20,527 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 45.81818181818182) internal successors, (504), 10 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-28 02:27:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:20,556 INFO L225 Difference]: With dead ends: 23200 [2024-11-28 02:27:20,556 INFO L226 Difference]: Without dead ends: 12991 [2024-11-28 02:27:20,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:27:20,566 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 1728 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:20,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 148 Invalid, 5148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [838 Valid, 4310 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:27:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12991 states. [2024-11-28 02:27:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12991 to 11277. [2024-11-28 02:27:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11277 states, 11276 states have (on average 1.1097020219936147) internal successors, (12513), 11276 states have internal predecessors, (12513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 12513 transitions. [2024-11-28 02:27:20,827 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 12513 transitions. Word has length 278 [2024-11-28 02:27:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:20,828 INFO L471 AbstractCegarLoop]: Abstraction has 11277 states and 12513 transitions. [2024-11-28 02:27:20,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 45.81818181818182) internal successors, (504), 10 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 12513 transitions. [2024-11-28 02:27:20,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-28 02:27:20,836 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:20,836 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:20,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:27:21,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:21,042 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:21,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:21,042 INFO L85 PathProgramCache]: Analyzing trace with hash -927901590, now seen corresponding path program 1 times [2024-11-28 02:27:21,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:21,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130392489] [2024-11-28 02:27:21,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 179 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:21,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:21,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130392489] [2024-11-28 02:27:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130392489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:21,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818285087] [2024-11-28 02:27:21,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:21,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:21,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:21,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:21,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:27:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:21,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:27:22,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:22,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:27:22,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818285087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:22,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:27:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 02:27:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297189697] [2024-11-28 02:27:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:22,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:27:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:22,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:27:22,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:27:22,595 INFO L87 Difference]: Start difference. First operand 11277 states and 12513 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:23,655 INFO L93 Difference]: Finished difference Result 23108 states and 25622 transitions. [2024-11-28 02:27:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:27:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2024-11-28 02:27:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:23,680 INFO L225 Difference]: With dead ends: 23108 [2024-11-28 02:27:23,680 INFO L226 Difference]: Without dead ends: 11833 [2024-11-28 02:27:23,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:27:23,689 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 183 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:23,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 150 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:27:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2024-11-28 02:27:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 11645. [2024-11-28 02:27:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11645 states, 11644 states have (on average 1.1072655444864308) internal successors, (12893), 11644 states have internal predecessors, (12893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11645 states to 11645 states and 12893 transitions. [2024-11-28 02:27:23,863 INFO L78 Accepts]: Start accepts. Automaton has 11645 states and 12893 transitions. Word has length 297 [2024-11-28 02:27:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:23,863 INFO L471 AbstractCegarLoop]: Abstraction has 11645 states and 12893 transitions. [2024-11-28 02:27:23,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 11645 states and 12893 transitions. [2024-11-28 02:27:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-28 02:27:23,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:23,875 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:23,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:27:24,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:24,076 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:24,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash 955474353, now seen corresponding path program 1 times [2024-11-28 02:27:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:24,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240300276] [2024-11-28 02:27:24,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:24,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 342 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240300276] [2024-11-28 02:27:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240300276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127904059] [2024-11-28 02:27:24,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:24,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:24,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:24,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:24,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:27:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:25,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:27:25,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-28 02:27:25,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:27:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127904059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:25,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:27:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:27:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877238269] [2024-11-28 02:27:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:25,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:25,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:25,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:27:25,533 INFO L87 Difference]: Start difference. First operand 11645 states and 12893 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:26,342 INFO L93 Difference]: Finished difference Result 24028 states and 26574 transitions. [2024-11-28 02:27:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2024-11-28 02:27:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:26,366 INFO L225 Difference]: With dead ends: 24028 [2024-11-28 02:27:26,366 INFO L226 Difference]: Without dead ends: 12201 [2024-11-28 02:27:26,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:27:26,378 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 98 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:26,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 348 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:27:26,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12201 states. [2024-11-28 02:27:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 11829. [2024-11-28 02:27:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11829 states, 11828 states have (on average 1.1045823469732838) internal successors, (13065), 11828 states have internal predecessors, (13065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11829 states to 11829 states and 13065 transitions. [2024-11-28 02:27:26,556 INFO L78 Accepts]: Start accepts. Automaton has 11829 states and 13065 transitions. Word has length 335 [2024-11-28 02:27:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:26,556 INFO L471 AbstractCegarLoop]: Abstraction has 11829 states and 13065 transitions. [2024-11-28 02:27:26,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 11829 states and 13065 transitions. [2024-11-28 02:27:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-28 02:27:26,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:26,571 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:26,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:27:26,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:27:26,772 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2007425143, now seen corresponding path program 1 times [2024-11-28 02:27:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972893418] [2024-11-28 02:27:26,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 174 proven. 185 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 02:27:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972893418] [2024-11-28 02:27:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972893418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905969948] [2024-11-28 02:27:27,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:27,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:27,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:27,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:27:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:27,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:27:27,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 02:27:28,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:27:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905969948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:28,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:27:28,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-28 02:27:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710090077] [2024-11-28 02:27:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:28,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:27:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:28,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:27:28,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:27:28,549 INFO L87 Difference]: Start difference. First operand 11829 states and 13065 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:29,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:29,547 INFO L93 Difference]: Finished difference Result 24027 states and 26511 transitions. [2024-11-28 02:27:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:27:29,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2024-11-28 02:27:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:29,560 INFO L225 Difference]: With dead ends: 24027 [2024-11-28 02:27:29,560 INFO L226 Difference]: Without dead ends: 12200 [2024-11-28 02:27:29,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:27:29,570 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 290 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:29,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 145 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:27:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12200 states. [2024-11-28 02:27:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12200 to 11277. [2024-11-28 02:27:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11277 states, 11276 states have (on average 1.1049130897481376) internal successors, (12459), 11276 states have internal predecessors, (12459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 12459 transitions. [2024-11-28 02:27:29,700 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 12459 transitions. Word has length 351 [2024-11-28 02:27:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:29,701 INFO L471 AbstractCegarLoop]: Abstraction has 11277 states and 12459 transitions. [2024-11-28 02:27:29,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 12459 transitions. [2024-11-28 02:27:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-28 02:27:29,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:29,708 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:29,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:27:29,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:27:29,909 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:29,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -199405277, now seen corresponding path program 1 times [2024-11-28 02:27:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682974565] [2024-11-28 02:27:29,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:30,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682974565] [2024-11-28 02:27:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682974565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172758377] [2024-11-28 02:27:30,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:30,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:30,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:30,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:30,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:27:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:30,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:27:30,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:31,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172758377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:32,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:32,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-28 02:27:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356784005] [2024-11-28 02:27:32,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:32,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:27:32,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:32,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:27:32,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:27:32,910 INFO L87 Difference]: Start difference. First operand 11277 states and 12459 transitions. Second operand has 10 states, 10 states have (on average 78.8) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:36,479 INFO L93 Difference]: Finished difference Result 37293 states and 41051 transitions. [2024-11-28 02:27:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:27:36,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 78.8) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2024-11-28 02:27:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:36,499 INFO L225 Difference]: With dead ends: 37293 [2024-11-28 02:27:36,500 INFO L226 Difference]: Without dead ends: 26018 [2024-11-28 02:27:36,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:27:36,508 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 950 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2954 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:36,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 114 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2954 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 02:27:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26018 states. [2024-11-28 02:27:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26018 to 23435. [2024-11-28 02:27:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23435 states, 23434 states have (on average 1.0960570111803363) internal successors, (25685), 23434 states have internal predecessors, (25685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23435 states to 23435 states and 25685 transitions. [2024-11-28 02:27:36,806 INFO L78 Accepts]: Start accepts. Automaton has 23435 states and 25685 transitions. Word has length 362 [2024-11-28 02:27:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:36,807 INFO L471 AbstractCegarLoop]: Abstraction has 23435 states and 25685 transitions. [2024-11-28 02:27:36,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.8) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23435 states and 25685 transitions. [2024-11-28 02:27:36,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-28 02:27:36,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:36,815 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:36,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:27:37,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:27:37,019 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:37,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -664639836, now seen corresponding path program 1 times [2024-11-28 02:27:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234344055] [2024-11-28 02:27:37,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 370 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:37,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234344055] [2024-11-28 02:27:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234344055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324108734] [2024-11-28 02:27:37,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:37,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:37,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:37,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:37,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:27:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:38,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:27:38,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 185 proven. 179 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-28 02:27:39,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-28 02:27:41,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324108734] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:41,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:27:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 8 [2024-11-28 02:27:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64746076] [2024-11-28 02:27:41,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:41,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:41,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:41,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:27:41,280 INFO L87 Difference]: Start difference. First operand 23435 states and 25685 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:42,206 INFO L93 Difference]: Finished difference Result 48349 states and 53032 transitions. [2024-11-28 02:27:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2024-11-28 02:27:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:42,229 INFO L225 Difference]: With dead ends: 48349 [2024-11-28 02:27:42,229 INFO L226 Difference]: Without dead ends: 24916 [2024-11-28 02:27:42,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:27:42,241 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 124 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:42,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 52 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:27:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24916 states. [2024-11-28 02:27:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24916 to 17543. [2024-11-28 02:27:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17543 states, 17542 states have (on average 1.0860221183445444) internal successors, (19051), 17542 states have internal predecessors, (19051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17543 states to 17543 states and 19051 transitions. [2024-11-28 02:27:42,488 INFO L78 Accepts]: Start accepts. Automaton has 17543 states and 19051 transitions. Word has length 373 [2024-11-28 02:27:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:42,489 INFO L471 AbstractCegarLoop]: Abstraction has 17543 states and 19051 transitions. [2024-11-28 02:27:42,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 17543 states and 19051 transitions. [2024-11-28 02:27:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-28 02:27:42,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:42,500 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:42,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:27:42,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:27:42,700 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:42,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1437509171, now seen corresponding path program 1 times [2024-11-28 02:27:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646418489] [2024-11-28 02:27:42,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 283 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:43,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646418489] [2024-11-28 02:27:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646418489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331331260] [2024-11-28 02:27:43,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:43,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:43,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:43,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:43,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:27:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:43,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:27:43,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 283 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:45,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 283 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331331260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:47,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:47,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 02:27:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955488910] [2024-11-28 02:27:47,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:47,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:27:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:47,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:27:47,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:27:47,931 INFO L87 Difference]: Start difference. First operand 17543 states and 19051 transitions. Second operand has 10 states, 10 states have (on average 73.4) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:51,180 INFO L93 Difference]: Finished difference Result 36222 states and 39282 transitions. [2024-11-28 02:27:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:27:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 73.4) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2024-11-28 02:27:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:51,193 INFO L225 Difference]: With dead ends: 36222 [2024-11-28 02:27:51,193 INFO L226 Difference]: Without dead ends: 19049 [2024-11-28 02:27:51,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:27:51,203 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 1051 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:51,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 115 Invalid, 4096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:27:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19049 states. [2024-11-28 02:27:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19049 to 14047. [2024-11-28 02:27:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14047 states, 14046 states have (on average 1.0810195073330486) internal successors, (15184), 14046 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14047 states to 14047 states and 15184 transitions. [2024-11-28 02:27:51,418 INFO L78 Accepts]: Start accepts. Automaton has 14047 states and 15184 transitions. Word has length 415 [2024-11-28 02:27:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:51,418 INFO L471 AbstractCegarLoop]: Abstraction has 14047 states and 15184 transitions. [2024-11-28 02:27:51,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.4) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14047 states and 15184 transitions. [2024-11-28 02:27:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-28 02:27:51,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:51,425 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:51,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:27:51,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:27:51,626 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:51,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash -576802177, now seen corresponding path program 1 times [2024-11-28 02:27:51,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:51,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218163987] [2024-11-28 02:27:51,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:51,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 02:27:51,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:51,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218163987] [2024-11-28 02:27:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218163987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:51,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708420164] [2024-11-28 02:27:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:51,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:27:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:51,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:27:51,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:51,906 INFO L87 Difference]: Start difference. First operand 14047 states and 15184 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:53,665 INFO L93 Difference]: Finished difference Result 34180 states and 36948 transitions. [2024-11-28 02:27:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:27:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 416 [2024-11-28 02:27:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:53,681 INFO L225 Difference]: With dead ends: 34180 [2024-11-28 02:27:53,681 INFO L226 Difference]: Without dead ends: 20135 [2024-11-28 02:27:53,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:53,690 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 206 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:53,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 68 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:27:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20135 states. [2024-11-28 02:27:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20135 to 19023. [2024-11-28 02:27:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19023 states, 19022 states have (on average 1.080643465461045) internal successors, (20556), 19022 states have internal predecessors, (20556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19023 states to 19023 states and 20556 transitions. [2024-11-28 02:27:54,010 INFO L78 Accepts]: Start accepts. Automaton has 19023 states and 20556 transitions. Word has length 416 [2024-11-28 02:27:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:54,011 INFO L471 AbstractCegarLoop]: Abstraction has 19023 states and 20556 transitions. [2024-11-28 02:27:54,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 19023 states and 20556 transitions. [2024-11-28 02:27:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-28 02:27:54,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:54,019 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:54,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:27:54,019 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:54,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1569054232, now seen corresponding path program 1 times [2024-11-28 02:27:54,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:54,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226461115] [2024-11-28 02:27:54,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 154 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:55,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226461115] [2024-11-28 02:27:55,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226461115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:55,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210993569] [2024-11-28 02:27:55,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:55,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:55,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:55,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:27:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:55,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:27:55,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 154 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:57,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 275 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:00,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210993569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:00,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:00,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-28 02:28:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298491215] [2024-11-28 02:28:00,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:00,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:28:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:00,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:28:00,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:28:00,928 INFO L87 Difference]: Start difference. First operand 19023 states and 20556 transitions. Second operand has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:06,948 INFO L93 Difference]: Finished difference Result 40984 states and 44511 transitions. [2024-11-28 02:28:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:28:06,949 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2024-11-28 02:28:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:06,964 INFO L225 Difference]: With dead ends: 40984 [2024-11-28 02:28:06,964 INFO L226 Difference]: Without dead ends: 21595 [2024-11-28 02:28:06,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:28:06,972 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 988 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 8823 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 9261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 8823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:06,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 248 Invalid, 9261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 8823 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-28 02:28:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21595 states. [2024-11-28 02:28:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21595 to 18828. [2024-11-28 02:28:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18828 states, 18827 states have (on average 1.0701651882934085) internal successors, (20148), 18827 states have internal predecessors, (20148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18828 states to 18828 states and 20148 transitions. [2024-11-28 02:28:07,178 INFO L78 Accepts]: Start accepts. Automaton has 18828 states and 20148 transitions. Word has length 476 [2024-11-28 02:28:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:07,178 INFO L471 AbstractCegarLoop]: Abstraction has 18828 states and 20148 transitions. [2024-11-28 02:28:07,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18828 states and 20148 transitions. [2024-11-28 02:28:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-11-28 02:28:07,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:07,192 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:07,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:28:07,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:07,393 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:07,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash -203478354, now seen corresponding path program 1 times [2024-11-28 02:28:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910457876] [2024-11-28 02:28:07,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 186 proven. 942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:08,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910457876] [2024-11-28 02:28:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910457876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:08,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100273192] [2024-11-28 02:28:08,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:08,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:08,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:08,646 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:08,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:28:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:08,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:28:08,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 62 proven. 1066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:09,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 771 proven. 233 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:28:14,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100273192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:14,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:14,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2024-11-28 02:28:14,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745655628] [2024-11-28 02:28:14,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:14,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:28:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:14,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:28:14,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:28:14,141 INFO L87 Difference]: Start difference. First operand 18828 states and 20148 transitions. Second operand has 17 states, 17 states have (on average 117.05882352941177) internal successors, (1990), 17 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:20,169 INFO L93 Difference]: Finished difference Result 56291 states and 60154 transitions. [2024-11-28 02:28:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:28:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 117.05882352941177) internal successors, (1990), 17 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 705 [2024-11-28 02:28:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:20,171 INFO L225 Difference]: With dead ends: 56291 [2024-11-28 02:28:20,171 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:28:20,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1407 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:28:20,182 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 1903 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 7262 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 7819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 7262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:20,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 248 Invalid, 7819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 7262 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 02:28:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:28:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:28:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:28:20,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 705 [2024-11-28 02:28:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:20,183 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:28:20,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 117.05882352941177) internal successors, (1990), 17 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:28:20,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:28:20,187 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:28:20,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:28:20,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:20,390 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:20,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:28:35,604 WARN L286 SmtUtils]: Spent 15.21s on a formula simplification. DAG size of input: 654 DAG size of output: 728 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-28 02:28:41,987 WARN L286 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 728 DAG size of output: 136 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-28 02:28:41,994 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:28:42,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:28:42 BoogieIcfgContainer [2024-11-28 02:28:42,055 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:28:42,056 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:28:42,056 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:28:42,056 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:28:42,057 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:52" (3/4) ... [2024-11-28 02:28:42,062 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:28:42,090 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 02:28:42,091 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:28:42,092 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:28:42,093 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:28:42,300 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:28:42,301 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:28:42,301 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:28:42,302 INFO L158 Benchmark]: Toolchain (without parser) took 113919.26ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 114.7MB in the beginning and 989.9MB in the end (delta: -875.2MB). Peak memory consumption was 187.7MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,302 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:28:42,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 926.40ms. Allocated memory is still 142.6MB. Free memory was 114.5MB in the beginning and 71.6MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.84ms. Allocated memory is still 142.6MB. Free memory was 71.4MB in the beginning and 54.5MB in the end (delta: 16.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,303 INFO L158 Benchmark]: Boogie Preprocessor took 221.07ms. Allocated memory is still 142.6MB. Free memory was 54.5MB in the beginning and 83.7MB in the end (delta: -29.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,303 INFO L158 Benchmark]: RCFGBuilder took 2592.30ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 83.7MB in the beginning and 261.1MB in the end (delta: -177.4MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,304 INFO L158 Benchmark]: TraceAbstraction took 109781.46ms. Allocated memory was 427.8MB in the beginning and 1.2GB in the end (delta: 780.1MB). Free memory was 260.2MB in the beginning and 1.0GB in the end (delta: -746.4MB). Peak memory consumption was 685.8MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,304 INFO L158 Benchmark]: Witness Printer took 245.51ms. Allocated memory is still 1.2GB. Free memory was 1.0GB in the beginning and 989.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:28:42,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 926.40ms. Allocated memory is still 142.6MB. Free memory was 114.5MB in the beginning and 71.6MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.84ms. Allocated memory is still 142.6MB. Free memory was 71.4MB in the beginning and 54.5MB in the end (delta: 16.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 221.07ms. Allocated memory is still 142.6MB. Free memory was 54.5MB in the beginning and 83.7MB in the end (delta: -29.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2592.30ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 83.7MB in the beginning and 261.1MB in the end (delta: -177.4MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. * TraceAbstraction took 109781.46ms. Allocated memory was 427.8MB in the beginning and 1.2GB in the end (delta: 780.1MB). Free memory was 260.2MB in the beginning and 1.0GB in the end (delta: -746.4MB). Peak memory consumption was 685.8MB. Max. memory is 16.1GB. * Witness Printer took 245.51ms. Allocated memory is still 1.2GB. Free memory was 1.0GB in the beginning and 989.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 208]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 283 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 88.0s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 42.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9205 SdHoareTripleChecker+Valid, 38.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9205 mSDsluCounter, 4016 SdHoareTripleChecker+Invalid, 32.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1102 mSDsCounter, 4197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37457 IncrementalHoareTripleChecker+Invalid, 41654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4197 mSolverCounterUnsat, 2914 mSDtfsCounter, 37457 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6298 GetRequests, 6185 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23435occurred in iteration=15, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 24124 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 9664 NumberOfCodeBlocks, 9664 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 12238 ConstructedInterpolants, 0 QuantifiedInterpolants, 81282 SizeOfPredicates, 18 NumberOfNonLiveVariables, 4755 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 35 InterpolantComputations, 15 PerfectInterpolantSequences, 8131/13180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((a29 <= 140) && (0 <= ((long long) 909625 + a23))) && (a4 == 0)) && (a25 <= 10)) && (a3 == 1)) && (((long long) a23 + 599772) <= 0)) && (a8 == 15)) && (a25 != 9)) || ((((((((long long) a23 + 43) <= 0) && (a25 == 12)) && (0 <= ((long long) a23 + 599772))) && (a4 == 0)) && (a3 == 1)) && (a8 == 15))) || (((((((long long) a29 + 275802) <= 0) && (a25 == 9)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || (((((((((long long) a23 + 43) <= 0) && (a29 <= 140)) && (a25 == 11)) && (0 <= ((long long) 386869 + a23))) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || (((((((0 <= ((long long) 909625 + a23)) && (a4 == 0)) && (((long long) a29 + 275824) <= 0)) && (a25 == 9)) && (a3 == 1)) && (a23 <= 312)) && (a8 == 15))) || ((((((((0 <= ((long long) a23 + 599772)) && (a4 == 0)) && (a25 == 11)) && (a3 == 1)) && (a23 <= 312)) && (a8 == 15)) && (246 <= a29)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 483491)))) || (((((((((0 <= ((long long) a23 + 599772)) && (a29 <= 140)) && (a4 == 0)) && (0 <= (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118))) && (a25 <= 10)) && (a3 == 1)) && (((0 < (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) || (((((long long) a23 * 4) >= 0) ? (((long long) a23 * 4) % 5) : ((((long long) a23 * 4) % 5) + 5)) != 0)) || (((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) >= 0) ? (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) : ((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) + 5)) != 0))) && (a8 == 15)) && ((0 < ((long long) a23 + 43)) || (a25 != 9)))) || ((((((((a25 == 11) && (0 <= (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118))) && (a3 == 1)) && (((0 < (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) || (((((long long) a23 * 4) >= 0) ? (((long long) a23 * 4) % 5) : ((((long long) a23 * 4) % 5) + 5)) != 0)) || (((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) >= 0) ? (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) : ((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) + 5)) != 0))) && (a29 <= 220)) && (a4 == 1)) && (a8 == 15)) && (0 <= ((long long) a23 + 42)))) || ((((((((long long) a23 + 43) <= 0) && (a3 == 1)) && (a4 == 1)) && (214883 <= a29)) && (a8 == 15)) && (a25 == 10))) || ((((((((0 <= (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) && (a3 == 1)) && (((0 < (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) || (((((long long) a23 * 4) >= 0) ? (((long long) a23 * 4) % 5) : ((((long long) a23 * 4) % 5) + 5)) != 0)) || (((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) >= 0) ? (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) : ((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) + 5)) != 0))) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 138028))) && (a4 == 1)) && (a8 == 15)) && (0 <= ((long long) a23 + 42))) && ((a25 == 13) || (a25 == 12)))) || (((((((((long long) a23 + 43) <= 0) && (0 <= ((long long) a23 + 599772))) && (a29 <= 140)) && (a25 <= 10)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || (((((((((a29 <= 275) && ((((a23 >= 0) ? (a23 % 5) : ((a23 % 5) + 5)) != 0) || (0 < (((a23 >= 0) ? (a23 / 5) : ((a23 / 5) - 1)) + 301942)))) && (a3 == 1)) && (((long long) a23 + 599772) <= 0)) && (a4 == 1)) && (a25 <= 9)) && (a8 == 15)) && (246 <= a29)) && (0 <= (((a23 >= 0) ? (a23 / 5) : ((a23 / 5) - 1)) + 301942)))) || (((((((a4 == 0) && (a3 == 1)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 138028))) && (a23 <= 312)) && (a8 == 15)) && (0 <= ((long long) a23 + 42))) && ((a25 == 13) || (a25 == 12)))) || ((((((((a29 <= 275) && (a25 == 12)) && (140 < a29)) && (0 <= ((long long) 909625 + a23))) && (a4 == 0)) && (a3 == 1)) && (a23 <= 312)) && (a8 == 15))) || (((((((a29 <= 140) && (0 <= ((long long) 909625 + a23))) && (a4 == 0)) && (a25 == 11)) && (a3 == 1)) && (a23 <= 312)) && (a8 == 15))) || ((((((a25 == 13) && (a29 <= 275)) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a8 == 15))) || (((((((a25 == 11) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a8 == 15)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 483491))) && (0 <= ((long long) a23 + 42)))) || (((((((((a25 == 11) && (0 <= (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118))) && (a3 == 1)) && (((0 < (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) || (((((long long) a23 * 4) >= 0) ? (((long long) a23 * 4) % 5) : ((((long long) a23 * 4) % 5) + 5)) != 0)) || (((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) >= 0) ? (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) : ((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) + 5)) != 0))) && (a4 == 1)) && (a8 == 15)) && (246 <= a29)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 483491))) && (0 <= ((long long) a23 + 42)))) || ((((((((0 <= ((long long) 909625 + a23)) && (a25 == 11)) && (a3 == 1)) && (a4 == 1)) && (214883 <= a29)) && (a23 <= 312)) && (a8 == 15)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 483491)))) || (((((((a23 >= 0) ? (a23 % 5) : ((a23 % 5) + 5)) != 0) || (0 < (((a23 >= 0) ? (a23 / 5) : ((a23 / 5) - 1)) + 301942))) && (a23 <= 312)) && (0 <= (((a23 >= 0) ? (a23 / 5) : ((a23 / 5) - 1)) + 301942))) && (((((((a29 <= 275) && (a25 == 12)) && (a4 == 0)) && (a3 == 1)) && (a8 == 15)) && (246 <= a29)) || ((((((((long long) a23 + 43) <= 0) && (a4 == 0)) && (a25 == 9)) && (10250 <= a29)) && (a3 == 1)) && (a8 == 15))))) || ((((((((0 <= ((long long) 909625 + a23)) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a25 <= 9)) && (a8 == 15)) && (246 <= a29)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 483491)))) || (((((((((long long) a23 + 43) <= 0) && (0 <= ((long long) a23 + 599772))) && (a3 == 1)) && (a29 <= 220)) && (a4 == 1)) && (a8 == 15)) && ((a25 == 13) || (a25 == 12)))) || ((((((((long long) 599992 + a23) <= 0) && (a3 == 1)) && (a29 <= 220)) && (a4 == 1)) && (a8 == 15)) && ((a25 == 13) || (a25 == 12)))) || ((((((((0 <= (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) && (a25 <= 10)) && (a3 == 1)) && (((0 < (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) || (((((long long) a23 * 4) >= 0) ? (((long long) a23 * 4) % 5) : ((((long long) a23 * 4) % 5) + 5)) != 0)) || (((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) >= 0) ? (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) : ((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) + 5)) != 0))) && (a4 == 1)) && (a8 == 15)) && ((a23 < 307) || (((a29 >= 0) ? (a29 / 5) : ((a29 / 5) - 1)) < 483491))) && (0 <= ((long long) a23 + 42)))) || ((((((((a29 <= 275) && (0 <= ((long long) a23 + 599772))) && (a25 == 11)) && (a3 == 1)) && (a4 == 1)) && (a23 <= 312)) && (a8 == 15)) && (246 <= a29))) || ((((((((a29 <= 275) && (a25 == 12)) && (a4 == 0)) && (0 <= (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118))) && (0 <= ((long long) 386869 + a23))) && (a3 == 1)) && (((0 < (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 25) : ((((long long) -1 * a23) / 25) - 1)) + 1130118)) || (((((long long) a23 * 4) >= 0) ? (((long long) a23 * 4) % 5) : ((((long long) a23 * 4) % 5) + 5)) != 0)) || (((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) >= 0) ? (((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) : ((((((long long) -1 * a23) >= 0) ? (((long long) -1 * a23) / 5) : ((((long long) -1 * a23) / 5) - 1)) % 5) + 5)) != 0))) && (a8 == 15))) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:28:42,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cc3fb3-d730-4d55-880e-096158a1b112/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE